Is China Winning the Innovation Race?
Over the past two millennia, Chinese ingenuity has spawned some of humanity's most consequential inventions. Without gunpowder, guns, bombs, and rockets; without paper, printing, and money printed on paper; and without the compass, which enabled ships to navigate the open ocean, modern civilization might never have been born.
Today, a specter is haunting the developed world: Chinese innovation dominance. And the results have been so spectacular that the United States feels its preeminence threatened.
Yet China lapsed into cultural and technological stagnation during the Qing dynasty, just as the Scientific Revolution was transforming Europe. Western colonial incursions and a series of failed rebellions further sapped the Celestial Empire's capacity for innovation. By the mid-20th century, when the Communist triumph led to a devastating famine and years of bloody political turmoil, practically the only intellectual property China could offer for export was Mao's Little Red Book.
After Deng Xiaoping took power in 1978, launching a transition from a rigidly planned economy to a semi-capitalist one, China's factories began pumping out goods for foreign consumption. Still, originality remained a low priority. The phrase "Made in China" came to be synonymous with "cheap knockoff."
Today, however, a specter is haunting the developed world: Chinese innovation dominance. It first wafted into view in 2006, when the government announced an "indigenous innovation" campaign, dedicated to establishing China as a technology powerhouse by 2020—and a global leader by 2050—as part of its Medium- and Long-Term National Plan for Science and Technology Development. Since then, an array of initiatives have sought to unleash what pundits often call the Chinese "tech dragon," whether in individual industries, such as semiconductors or artificial intelligence, or across the board (as with the Made in China 2025 project, inaugurated in 2015). These efforts draw on a well-stocked bureaucratic arsenal: state-directed financing; strategic mergers and acquisitions; competition policies designed to boost domestic companies and hobble foreign rivals; buy-Chinese procurement policies; cash incentives for companies to file patents; subsidies for academic researchers in favored fields.
The results have been spectacular—so much so that the United States feels its preeminence threatened. Voices across the political spectrum are calling for emergency measures, including a clampdown on technology transfers, capital investment, and Chinese students' ability to study abroad. But are the fears driving such proposals justified?
"We've flipped from thinking China is incapable of anything but imitation to thinking China is about to eat our lunch," says Kaiser Kuo, host of the Sinica podcast at supchina.com, who recently returned to the U.S after 20 years in Beijing—the last six as director of international communications for the tech giant Baidu. Like some other veteran China-watchers, Kuo believes neither extreme reflects reality. "We're in as much danger now of overestimating China's innovative capacity," he warns, "as we were a few years ago of underestimating it."
A Lab and Tech-Business Bonanza
By many measures, China's innovation renaissance is mind-boggling. Spending on research and development as a percentage of gross domestic product nearly quadrupled between 1996 and 2016, from .56 percent to 2.1 percent; during the same period, spending in the United States rose by just .3 percentage points, from 2.44 to 2.79 percent of GDP. China is now second only to the U.S. in total R&D spending, accounting for 21 percent of the global total of $2 trillion, according to a report released in January by the National Science Foundation. In 2016, the number of scientific publications from China exceeded those from the U.S. for the first time, by 426,000 to 409,000. Chinese researchers are blazing new trails on the frontiers of cloning, stem cell medicine, gene editing, and quantum computing. Chinese patent applications have soared from 170,000 to nearly 3 million since 2000; the country now files almost as many international patents as the U.S. and Japan, and more than Germany and South Korea. Between 2008 and 2017, two Chinese tech firms—Huawei and ZTE—traded places as the world's top patent filer in six out of nine years.
"China is still in its Star Trek phase, while we're in our Black Mirror phase." Yet there are formidable barriers to China beating America in the innovation race—or even catching up anytime soon.
Accompanying this lab-based ferment is a tech-business bonanza. China's three biggest internet companies, Baidu, Alibaba Group and Tencent Holdings (known collectively as BAT), have become global titans of search, e-commerce, mobile payments, gaming, and social media. Da-Jiang Innovations in Science and Technology (DJI) controls more than 70 percent of the world's commercial drone market. Of the planet's 262 "unicorns" (startups worth more than a billion dollars), about one-third are Chinese. The country attracted $77 billion in venture capital investment between 2014 and 2016, according to Fortune, and is now among the top three markets for VC in emerging technologies including AI, virtual reality, autonomous vehicles, and 3D printing.
These developments have fueled a buoyant techno-optimism in China that contrasts sharply with the darker view increasingly prevalent in the West—in part, perhaps, because China's historic limits on civil liberties have inured the populace to the intrusive implications of, say, facial recognition technology or social-credit software, which are already being used to tighten government control. "China is still in its Star Trek phase, while we're in our Black Mirror phase," Kuo observes. By contrast with Americans' ambivalent attitudes toward Facebook founder Mark Zuckerberg or Amazon's Jeff Bezos, he adds, most Chinese regard tech entrepreneurs like Baidu's Robin Li and Alibaba's Jack Ma as "flat-out heroes."
Yet there are formidable barriers to China beating America in the innovation race—or even catching up anytime soon. Many are catalogued in The Fat Tech Dragon, a 2017 monograph by Scott Kennedy, deputy director of the Freeman Chair in China Studies and director of the Project on Chinese Business and Political Economy at the Center for Strategic and International Studies. Among the obstacles, Kennedy writes, are "an education system that encourages deference to authority and does not prepare students to be creative and take risks, a financial system that disproportionately funnels funds to undeserving state-owned enterprises… and a market structure where profits can be made through a low-margin, high-volume strategy or through political connections."
China's R&D money, Kennedy points out, is mostly showered on the "D": of the $209 billion spent in 2015, only 5 percent went toward basic research, 10.8 percent toward applied research, and a massive 84.2 percent toward development. While fully half of venture capital in the States goes to early-stage startups, the figure for China is under 20 percent; true "angel" investors are scarce. Likewise, only 21 percent of Chinese patents are for original inventions, as opposed to tweaks of existing technologies. Most problematic, the domestic value of patents in China is strikingly low. In 2015, the country's patent licensing generated revenues of just $1.75 billion, compared to $115 billion for IP licensing in the U.S. in 2012 (the most recent year for which data is available). In short, Kennedy concludes, "China may now be a 'large' IP country, but it is still a 'weak' one."
"[The Chinese] are trying very hard to keep the economy from crashing, but it'll happen eventually. Then there will be a major, major contraction."
Anne Stevenson-Yang, co-founder and research director of J Capital Research, and a leading China analyst, sees another potential stumbling block: the government's obsession with neck-snapping GDP growth. "What China does is to determine, 'Our GDP growth will be X,' and then it generates enough investment to create X," Stevenson-Yang explains. To meet those quotas, officials pour money into gigantic construction projects, creating the empty "ghost cities" that litter the countryside, or subsidize industrial production far beyond realistic demand. "It's the ultimate Ponzi-scheme economy," she says, citing as examples the Chinese cellphone and solar industries, which ballooned on state funding, flooded global markets with dirt-cheap products, thrived just long enough to kill off most of their overseas competitors, and then largely collapsed. Such ventures, Stevenson-Yang notes, have driven China's debt load perilously high. "They're trying very hard to keep the economy from crashing, but it'll happen eventually," she predicts. "Then there will be a major, major contraction."
"An Intensifying Race Toward Techno-Nationalism"
The greatest vulnerability of the Chinese innovation boom may be that it still depends heavily on imported IP. "Over the last few years, China has placed its bets on a combination of global knowledge sourcing and indigenous technology development," says Dieter Ernst, a senior fellow at the Centre for International Governance Innovation in Waterloo, Canada, and the East-West Center in Honolulu, who has served as an Asia advisor for the U.N. and the World Bank. Aside from international journals (and, occasionally, industrial espionage), Chinese labs and corporations obtain non-indigenous knowledge in a number of ways: by paying licensing fees; recruiting Chinese scientists and engineers who've studied or worked abroad; hiring professionals from other countries; or acquiring foreign companies. And though enforcement of IP laws has improved markedly in recent years, foreign businesses are often pressured to provide technology transfers in exchange for access to markets.
Many of China's top tech entrepreneurs—including Ma, Li, and Alibaba's Joseph Tsai—are alumni of U.S. universities, and, as Kuo puts it, "big fans of all things American." Unfortunately, however, Americans are ever less likely to be fans of China, thanks largely to that country's sometimes predatory trade practices—and also to what Ernst calls "an intensifying race toward techno-nationalism." With varying degrees of bellicosity and consistency, leaders of both U.S. parties embrace elements of the trend, as do politicians (and voters) across much of Europe. "There's a growing consensus that China is poised to overtake us," says Ernst, "and that we need to design policies to obstruct its rise."
One of the foremost liberal analysts supporting this view is Lee Branstetter, a professor of economics and public policy at Carnegie Mellon University and former senior economist on President Barack Obama's Council of Economic Advisors. "Over the decades, in a systematic and premeditated fashion, the Chinese government and its state-owned enterprises have worked to extract valuable technology from foreign multinationals, with an explicit goal of eventually displacing those leading multinationals with successful Chinese firms in global markets," Branstetter wrote in a 2017 report to the United States Trade Representative. To combat such "forced transfers," he suggested, laws could be passed empowering foreign governments to investigate coercive requests and block any deemed inappropriate—not just those involving military-related or crucial infrastructure technology, which current statutes cover. Branstetter also called for "sharply" curtailing Chinese students' access to Western graduate programs, as a way to "get policymakers' attention in Beijing" and induce them to play fair.
Similar sentiments are taking hold in Congress, where the Foreign Investment Risk Review Modernization Act—aimed at strengthening the process by which the Committee on Foreign Investment in the United States reviews Chinese acquisition of American technologies—is expected to pass with bipartisan support, though its harsher provisions were softened due to objections from Silicon Valley. The Trump Administration announced in May that it would soon take executive action to curb Chinese investments in U.S. tech firms and otherwise limit access to intellectual property. The State Department, meanwhile, imposed a one-year limit on visas for Chinese grad students in high-tech fields.
Ernst argues that such measures are motivated largely by exaggerated notions of China's ability to reach its ambitious goals, and by the political advantages that fearmongering confers. "If you look at AI, chip design and fabrication, robotics, pharmaceuticals, the gap with the U.S. is huge," he says. "Reducing it will take at least 10 or 15 years."
Cracking down on U.S. tech transfers to Chinese companies, Ernst cautions, will deprive U.S. firms of vital investment capital and spur China to retaliate, cutting off access to the nation's gargantuan markets; it will also push China to forge IP deals with more compliant nations, or revert to outright piracy. And restricting student visas, besides harming U.S. universities that depend on Chinese scholars' billions in tuition, will have a "chilling effect on America's ability to attract to researchers and engineers from all countries."
"It's not a zero-sum game. I don't think China is going to eat our lunch. We can sit down and enjoy lunch together."
America's own science and technology community, Ernst adds, considers it crucial to swap ideas with China's fast-growing pool of talent. The 2017 annual meeting of the Palo Alto-based Association for Advancement of Artificial Intelligence, he notes, featured a nearly equal number of papers by researchers in China and the U.S. Organizers postponed the meeting after discovering that the original date coincided with the Chinese New Year.
China's rising influence on the tech world carries upsides as well as downsides, Scott Kennedy observes. The country's successes in e-commerce, he says, "haven't damaged the global internet sector, but have actually been a spur to additional innovation and progress. By contrast, China's success in solar and wind has decimated the global sectors," due to state-mandated overcapacity. "When Chinese firms win through open competition, the outcome is constructive; when they win through industrial policy and protectionism, the outcome is destructive."
The solution, Kennedy and like-minded experts argue, is to discourage protectionism rather than engage in it, adjusting tech-transfer policy just enough to cope with evolving national-security concerns. Instead of trying to squelch China's innovation explosion, they say, the U.S. should seek ways to spread its potential benefits (as happened in previous eras with Japan and South Korea), and increase America's indigenous investments in tech-related research, education, and job training.
"It's not a zero-sum game," says Kaiser Kuo. "I don't think China is going to eat our lunch. We can sit down and enjoy lunch together."
These doctors have a heart for recycling
This is part 3 of a three part series on a new generation of doctors leading the charge to make the health care industry more sustainable - for the benefit of their patients and the planet. Read part 1 here and part 2 here.
One could say that over 400 people owe their life to the fact that Carsten Israel fell in love. Twenty years ago, as a young doctor in Frankfurt, Germany, he began to court an au pair from Kenya, Elisabeth, his now-wife of 13 years with whom he has three children. When the couple started visiting her parents in Kenya, Israel wanted to check out the local hospitals, “just out of professional curiosity,“ says the cardiologist, who is currently the head doctor at the Clinic for Interior Medicine in Bielefeld. “I was completely shocked.“
Often he observed there were no doctors in the E.R.s, and hte nurses could render only basic first aid. “When somebody fell into a coma, they fell into a coma,“ Israel remembers. “There weren’t even any defibrillators to restart a patient’s heart,” while defibrillators are standard equipment in most clinics in the U.S. and Europe as lifesaving devices. When Israel finally visited the largest and most modern hospital in Nairobi, he found it better equipped but he learned that its services were only available to patients who could afford them. The cardiologist there had a drawer full of petitions from patients with heart ailments who couldn’t afford lifesaving surgery. Even two decades ago, a pacemaker cost $5,000 in Kenya, which made it unaffordable for most Kenyans who earn an average of $600 per month.
Since 2003, Israel and a team of two doctors and two nurses visit Kenya and Zambia once or twice a year to implant German pacemakers for free. Notably, the pacemakers and defibrillators Israel exports to Africa would end up in the landfill in Germany. Clinics have to pay for specialized services to dispose of this medical equipment. “In Germany, I could go to jail if I used a defibrillator that is one day past its expiration date,“ Israel says, “but in Kenya, people don’t have the money for the cheapest model. What nonsense to throw this precious medical equipment away while people in poorer countries die because they desperately need it.“
Israel works at the breakpoint between the laws in a wealthy country like Germany and the reality in the global South. The U.S. and most European countries have strict laws that ban the reuse of medical implants and enforce strict expiration dates for medical equipment. “But if a pacemaker is a few days past its expiration date, it still works perfectly fine,“ Israel says. “And it also happens that we implant a pacemaker and five months later it turns out that the patient needs a different kind. Then we replace it and we’d have to trash the first one in Germany, though it could easily run another 12 years.“
“If we get this right, we have lots of devices we can implant, hips and knees, etcetera. Where this will lead is limitless," says Eva Kline Rogers, the program coordinator for My Heart, Your Heart.
Israel has been collecting donations of pacemakers and defibrillators from manufacturers but also from other doctors and from funeral homes for his nonprofit Pacemakers for East Africa since 2003. Most funeral homes in the U.S. and Europe are legally obliged to remove pacemakers from the dead before cremation. “Most pacemakers survive their owners,“ says Israel. He sterilizes the pacemakers and finds them a new life in East Africa. Studies show that reused pacemakers carry no greater risk for the patients than new ones.
In the U.S., University of Michigan professor Thomas Crawford heads up a similar initiative, My Heart, Your Heart. “Each year 1 to 2 million individuals worldwide die due to a lack of access to pacemakers and defibrillators,” the organization notes on its website. The nonprofit was founded in 2009, but it took four years for the doctors to get permission from the FDA to export pacemakers. Since receiving permission, the organization has sent dozens of devices to the Philippines, Haiti, Venezuela, Kenya, Sierra Leone and Ukraine. “We were the first doctors ever to implant a pacemaker in Sierra Leone in 2018,” says Crawford, who has traveled extensively to most of the recipient countries.
Even individuals can donate their pacemakers; the organization offers a prepaid envelope. “My mother recently passed and she donated her device,” says Tina Alexandris-Souphis, one of the doctors at University of Michigan who collaborates on My Heart, Your Heart. The organization works with World Medical Relief and the U.K. based charity Pace4Life to maintain a registry of the most urgent patients and send devices to where they are needed the most.
My Heart, Your Heart is also conducting a randomized controlled trial to provide further evidence that reused pacemakers pose no additional risk. “Our vision is that we establish this is safe and create a blueprint for organizations around the world to safely reuse these devices instead of them being thrown in the trash,” says Eva Kline Rogers, the program’s coordinator. “If we get this right, we have lots of devices we can implant, hips and knees, etc. Where this will lead is limitless.” She points out that in addition to receiving the donated devices, the doctors in the global South also benefit from the expertise of renowned cardiologists, such as Crawford, who sometimes advise them in complex cases.
And Adrian Baranchuk, a Canadian doctor at the Kingston General Hospital at the Queen’s University, regularly travels through South America with his “cardiology van” to help villagers in remote areas with heart problems.
Israel says that he’s been accused of racism, in thinking that these pacemakers are suitable for those in the global South - many of whom are people of color - even though officials in wealthier countries consider them to be trash. The cardiologist counters such criticism with stories about desperate need of his patients. At his first medical visit to Nairobi that he organized with a local cardiologist, six patients were waiting for him. “In Germany, they would all be considered emergencies,” Israel says. One eighty-year old grandmother had a heartrate of 18. “I’ve never before seen anything like this,” Israel exclaims. “At first I thought I couldn’t find her pulse before I realized that her heart was only beating once every three seconds.” After the surgery, she got up, dressed herself and hurriedly packed her bag, explaining she had a ton of work to accomplish. Her family was in disbelief, Israel says. “They told me she had been bedridden for five years because as soon as she tried to get up she would faint.”
Israel has been accused of racism, in thinking that these pacemakers are suitable for those in the global South even though they're considered to be trash by officials in wealthier countries. The cardiologist counters such criticism with stories about desperate need of his patients.
Carsten Israel
The hospital in Nairobi where Israel conducts the surgeries, charges patients $200 for the use of its facilities. If patients can’t afford that sum, Israel will pay it from the funds of his nonprofit. For some people, $200 far exceeds their resources. Once, a family from the extremely poor Northern region of Kenya told him they couldn’t afford the $3 for the bus ride to Nairobi. Israel suspected this was a pretense because they were afraid of the surgery and agreed to reimburse the $3, “but when they came, they were wearing rags and were so rail-thin, I understood that they really needed every cent they had for food.”
Israel is a renowned cardiologists in Germany. And yet, he considers his work in East Africa to be particularly meaningful. “Generally, most patients in Germany will get the treatment they need,” he says, “and I never before experienced that people have an illness that is easily curable but simply won’t be treated.” He also feels a heavy responsibility. Many patients have his personal cell phone and call him when they have problems or good news about how they’re doing.
Some of those progress reports come much faster than in Israel’s home country. Before he implanted a pacemaker in a tall Massai in Kenya, the man had been picked on by his family because he wouldn’t help much with the hard work on the family peanut farm. “When I examined him, he had a pulse of 40,” Israel says. “It’s a miracle he was even standing upright, let alone hauling heavy bags.” After the surgery, Israel advised his patient to stay the night for observation, but the patient couldn’t wait to leave. Two hours later, he returned, covered in sweat. He’d been running sprints with his brothers to test the new device. Israel shakes his head. In Germany, it would be unthinkable for a patient to engage in athletics immediately after surgery. But the patient was exuberant: “I was the fastest!”
The success stories are notable partly because the challenges remain so steep. In Zambia, for instance, there is a single cardiologist; she determined to become one after losing her younger sister to an easily curable heart disease. Often, the hospitals not only lack pacemakers but also sterile surgery equipment, antibiotics and other essential material. Therefore, Israel and his team import everything they need for the surgeries, including medication. If necessary, they improvise. “I’ve done surgery with a desk lamp hanging from the ceiling by threads,” Israel says. He already knows that he will need to return to Kenya in six months to replace the pacemaker of one of his patients and replace the batteries in others. If he doesn’t travel, lives are at risk.These technologies may help more animals and plants survive climate change
This article originally appeared in One Health/One Planet, a single-issue magazine that explores how climate change and other environmental shifts are making us more vulnerable to infectious diseases by land and by sea - and how scientists are working on solutions.
Along the west coast of South Florida and the Keys, Florida Bay is a nursery for young Caribbean spiny lobsters, a favorite local delicacy. Growing up in small shallow basins, they are especially vulnerable to warmer, more saline water. Climate change has brought tidal floods, bleached coral reefs and toxic algal blooms to the state, and since the 1990s, the population of the Caribbean spiny lobster has dropped some 20 percent, diminishing an important food for snapper, grouper, and herons, as well as people. In 1999, marine ecologist Donald Behringer discovered the first known virus among lobsters, Panulirus argus virus—about a quarter of juveniles die from it before they mature.
“When the water is warm PaV1 progresses much more quickly,” says Behringer, who is based at the Emerging Pathogens Institute at the University of Florida in Gainesville.
Caribbean spiny lobsters are only one example of many species that are struggling in the era of climate change, both at sea and on land. As the oceans heat up, absorbing greenhouse gases and growing more acidic, marine diseases are emerging at an accelerated rate. Marine creatures are migrating to new places, and carrying pathogens with them. The latest grim report in the journal Science, states that if global warming continues at the current rate, the extinction of marine species will rival the Permian–Triassic extinction, sometimes called the “Great Dying,” when volcanoes poisoned the air and wiped out as much as 90 percent of all marine life 252 million years ago.
Similarly, on land, climate change has exposed wildlife, trees and crops to new or more virulent pathogens. Warming environments allow fungi, bacteria, viruses and infectious worms to proliferate in new species and locations or become more virulent. One paper modeling records of nearly 1,400 wildlife species projects that parasites will double by 2070 in the far north and in high-altitude places. Right now, we are seeing the effects most clearly on the fringes—along the coasts, up north and high in the mountains—but as the climate continues changing, the ripples will reach everywhere.
Few species are spared
On the Hawaiian Islands, mosquitoes are killing more songbirds. The dusky gray akikiki of Kauai and the chartreuse-yellow kiwikiu of Maui could vanish in two years, under assault from mosquitoes bearing avian malaria, according to a University of Hawaiʻi 2022 report. Previously, the birds could escape infection by roosting high in the cold mountains, where the pests couldn’t thrive, but climate change expanded the range of the mosquito and narrowed theirs.
Likewise, as more midge larvae survive over warm winters and breed better during drier summers, they bite more white-tailed deer, spreading often-fatal epizootic hemorrhagic disease. Especially in northern regions of the globe, climate change brings the threat of midges carrying blue tongue disease, a virus, to sheep and other animals. Tick-borne diseases like encephalitis and Lyme disease may become a greater threat to animals and perhaps humans.
"If you put all your eggs in one basket and then a pest comes a long, then you are more vulnerable to those risks," says Mehroad Ehsani, managing director of the food initiative in Africa for the Rockefeller Foundation. "Research is needed on resilient, climate smart, regenerative agriculture."
In the “thermal mismatch” theory of wildlife disease, cold-adapted species are at greater risk when their habitats warm, and warm-adapted species suffer when their habitats cool. Mammals can adjust their body temperature to adapt to some extent. Amphibians, fish and insects that cannot regulate body temperatures may be at greater risk. Many scientists see amphibians, especially, as canaries in the coalmine, signaling toxicity.
Early melting ice can foster disease. Climate models predict that the spring thaw will come ever-earlier in the lakes of the French Pyrenees, for instance, which traditionally stayed frozen for up to half the year. The tadpoles of the midwife toad live under the ice, where they are often infected with amphibian chytrid fungus. When a seven-year study tracked the virus in three species of amphibians in Pyrenees’s Lac Arlet, the research team found that, the earlier the spring thaw arrived, the more infection rates rose in common toads— , while remaining high among the midwife toads. But the team made another sad discovery: with early thaws, the common frog, which was thought to be free of the disease in Europe, also became infected with the fungus and died in large numbers.
Changing habitats affect animal behavior. Normally, spiny lobsters rely on chemical cues to avoid predators and sick lobsters. New conditions may be hampering their ability to “social distance”—which may help PaV1 spread, Behringer’s research suggests. Migration brings other risks. In April 2022, an international team led by scientists at Georgetown University announced the first comprehensive overview, published in the journal Nature, of how wild mammals under pressure from a changing climate may mingle with new populations and species—giving viruses a deadly opportunity to jump between hosts. Droughts, for example, will push animals to congregate at the few places where water remains.
Plants face threats also. At the timberline of the cold, windy, snowy mountains of the U.S. west, whitebark pine forests are facing a double threat, from white pine blister rust, a fungal disease, and multiplying pine beetles. “If we do nothing, we will lose the species,” says Robert Keane, a research ecologist for the U.S. Forest Service, based in Missoula, Montana. That would be a huge shift, he explains: “It’s a keystone species. There are over 110 animals that depend on it, many insects, and hundreds of plants.” In the past, beetle larvae would take two years to complete their lifecycle, and many died in frost. “With climate change, we're seeing more and more beetles survive, and sometimes the beetle can complete its lifecycle in one year,” he says.
Quintessential crops are under threat too
As some pathogens move north and new ones develop, they pose novel threats to the crops humans depend upon. This is already happening to wheat, coffee, bananas and maize.
Breeding against wheat stem rust, a fungus long linked to famine, was a key success in the mid-20th century Green Revolution, which brought higher yields around the world. In 2013, wheat stem rust reemerged in Germany after decades of absence. It ravaged both bread and durum wheat in Sicily in 2016 and has spread as far as England and Ireland. Wheat blast disease, caused by a different fungus, appeared in Bangladesh in 2016, and spread to India, the world’s second largest producer of wheat.
Insects, moths, worms, and coffee leaf rust—a fungus now found in all coffee-growing countries—threaten the livelihoods of millions of people who grow coffee, as well as everybody’s cup of joe. More heat, more intense rain, and higher humidity have allowed coffee leaf rust to cycle more rapidly. It has grown exponentially, overcoming the agricultural chemicals that once kept it under control.
To identify new diseases and fine-tune crops for resistance, scientists are increasingly relying on genomic tools.
Tar spot, a fungus native to Latin America that can cut corn production in half, has emerged in highland areas of Central Mexico and parts of the U.S.. Meanwhile, maize lethal necrosis disease has spread to multiple countries in Africa, notes Mehrdad Ehsani, Managing Director for the Food Initiative in Africa of the Rockefeller Foundation. The Cavendish banana, which most people eat today, was bred to be resistant to the fungus Panama 1. Now a new fungus, Panama 4, has emerged on every continent–including areas of Latin America that rely on the Cavendish for their income, reported a recent story in the Guardian. New threats are poised to emerge. Potato growers in the Andes Mountains have been shielded from disease because of colder weather at high altitude, but temperature fluxes and warming weather are expected to make this crop vulnerable to potato blight, found plant pathologist Erica Goss, at the Emerging Pathogens Institute.
Science seeks solutions
To protect food supplies in the era of climate change, scientists are calling for integrated global surveillance systems for crop disease outbreaks. “You can imagine that a new crop variety that is drought-tolerant could be susceptible to a pathogen that previous varieties had some resistance against,” Goss says. “Or a country suffers from a calamitous weather event, has to import seed from another country, and that seed is contaminated with a new pathogen or more virulent strain of an existing pathogen.” Researchers at the John Innes Center in Norwich and Aarhus University in Denmark have established ways to monitor wheat rust, for example.
Better data is essential, for both plants and animals. Historically, models of climate change predicted effects on plant pathogens based on mean temperatures, and scientists tracked plant responses to constant temperatures, explains Goss. “There is a need for more realistic tests of the effects of changing temperatures, particularly changes in daily high and low temperatures on pathogens,” she says.
To identify new diseases and fine-tune crops for resistance, scientists are increasingly relying on genomic tools. Goss suggests factoring the impact of climate change into those tools. Genomic efforts to select soft red winter wheat that is resistant to Fusarium head blight (FHB), a fungus that plagues farmers in the Southeastern U.S., have had early success. But temperature changes introduce a new factor.
A fundamental solution would be to bring back diversification in farming, says Ehsani. Thousands of plant species are edible, yet we rely on a handful. Wild relatives of domesticated crops are a store of possibly useful genes that may confer resistance to disease. The same is true for livestock. “If you put all your eggs in one basket and then a pest comes along, then you are more vulnerable to those risks. Research is needed on resilient, climate smart, regenerative agriculture,” Ehsani says.
Jonathan Sleeman, director of the U.S. Geological Survey National Wildlife Health Center, has called for data on wildlife health to be systematically collected and integrated with climate and other variables because more comprehensive data will result in better preventive action. “We have focused on detecting diseases,” he says, but a more holistic strategy would apply human public health concepts to assuring animal wellbeing. (For example, one study asked experts to draw a diagram of relationships of all the factors affecting the health of a particular group of caribou.) We must not take the health of plants and animals for granted, because their vulnerability inevitably affects us too, Sleeman says. “We need to improve the resilience of wildlife populations so they can withstand the impact of climate change.”