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A ‘Crossroads’ for Humanity: Earth’s Biodiversity Is Still Collapsing

Countries have made insufficient progress on international goals designed to halt a catastrophic slide, a new report found.

Orangutans in Indonesia last year, when blazes from illegal land-clearing increased sharply.Credit...Ulet Ifansasti/Getty Images

The world is failing to address a catastrophic biodiversity collapse that not only threatens to wipe out beloved species and invaluable genetic diversity, but endangers humanity’s food supply, health and security, according to a sweeping United Nations report issued on Tuesday.

When governments act to protect and restore nature, the authors found, it works. But despite commitments made 10 years ago, nations have not come close to meeting the scale of the crisis, which continues to worsen because of unsustainable farming, overfishing, burning of fossil fuels and other activities.

“Humanity stands at a crossroads,” the report said.

It comes as the devastating consequences that can result from an unhealthy relationship with nature are on full display: A pandemic that very likely jumped from bats has upended life worldwide, and wildfires, worsened by climate change and land management policies, are ravaging the American West.

“These things are a sign of what is to come,” said David Cooper, an author of the report and the deputy executive secretary of the United Nations Convention on Biological Diversity, the global treaty underlying the assessment. “These things will only get worse if we don’t change course.”

The report looked at a decade of efforts by national governments. In 2010, after painstaking scientific work and arduous negotiation, almost every country in the world signed on to 20 goals under the convention to staunch the biodiversity hemorrhage.

At the time, the science was already clear: Human activity was decimating animals and plants across the planet, causing a wave of extinctions and throwing ecosystems so out of balance that the domino effects threatened humans themselves. The agreement, with a deadline of 2020 for the new goals, was a hard-won diplomatic triumph.

The report, which assesses progress on the 20 goals, has found that the world is doing far too little.

“Some progress has been made, but it’s not good enough,” said Elizabeth Maruma Mrema, the leader of the U.N. convention.

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A logging operation in Moraes Almeida, a town on the Trans-Amazonian Highway in Pará State, Brazil, last year.Credit...Nelson Almeida/Agence France-Presse — Getty Images

As with climate change, scientific alarms on biodiversity loss have gone largely unheeded as the problem intensifies.

Last year, an exhaustive international report concluded that humans had reshaped the natural world so drastically that one million species of animals and plants were at risk of extinction. This year, the World Economic Forum’s annual global risk report identified biodiversity loss, in addition to climate change, as one of the most urgent threats, saying that “human-driven nature and biodiversity loss is threatening life on our planet.” Last week, a respected index of animal life showed that, on average, the populations of almost 4,400 monitored mammals, birds, reptiles, amphibians and fish had declined by 68 percent since 1970.

At the global level, only six of the biodiversity convention’s 20 targets were partially achieved and none were fully achieved.

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How to Stop the Next Pandemic

It’s not just Covid-19. Pathogens once confined to nature are making their way into humans on a more regular basis. And it’s our fault.

This graph can tell you a lot about your future. Each bar shows how many new infectious diseases emerged in a year. In 1944, there was one. In ’48, three. We have no immunity to new pathogens. Each disease on this list posed a new pandemic threat. It was around 1960 when the number began to rise. By the time 1990 rolled around, it wasn’t just two or three new diseases that year — there were 18. Soon after, the trend became so clear, a scientist appeared on TV with a warning. “What worries me the most is that we’re going to miss the next emerging disease, that we’re going to suddenly find a SARS virus that moves from one part of the planet to another, wiping out people as it moves along.” That was 17 years ago. And today, stuck at home in a seemingly never-ending pandemic purgatory, it appears that we did not heed his warning. Covid-19 has opened our eyes to the danger. But has it opened them enough to look past this pandemic to what our future holds? We tracked down that same scientist today to ask him: How do you stop the next pandemic? He said the trend isn’t looking good. “We see an increased frequency of emerging pandemics. We also still have the ones that emerged recently. We still have H.I.V. We still have Ebola. We still have H1N1. So we’re adding to the stock of known pandemic pathogens with new ones at an increasing rate. That’s not a good place for us as a species right now.” If you want to know how to stop the next pandemic, you first need to know why they’re happening. “We humans are an ecological anomaly. There have never been 7.7 billion large-body vertebrates of one species on this planet before in the history of earth.” This is David Quammen. He’s a — “— a very unmystical, black-hole Darwinian materialist.” Well, David’s a storyteller. He’s been writing about the origin of infectious diseases for decades. “So we are unprecedented, and we’re causing ecological wreckage that’s unprecedented, and there are consequences of that.” [explosions] “Pandemics emerge due to our ecological footprint. And our ecological footprint is accelerating exponentially.” Remember this guy? That’s Peter Daszak, the scientist who warned us in 2003. He’s sometimes referred to as a virus hunter. He goes out to preemptively find viruses before they find us. “It’s the connection between humans and animals that’s driving this. And that connection happens where people move into a new region through things like road building and deforestation, mining, palm oil production, timber and livestock production. People move into new areas. They come across wildlife that we’ve not really had much contact with. The pathogens spill over into them, and then can spread through that connectivity.” [birds squawking] “We’re encroaching on their habitats. And just many, many more opportunities for spillover events to occur.” Christian Walzer is a global veterinarian and executive director for the Wildlife Conservation Society. “The destruction happening at the edge of forests is one of the areas where we’re very concerned. Changing the trees that bats, for example, would roost on, they may be driven to an edge. They may be driven into an area where there’s more human population. And suddenly, you create a contact area which didn’t exist before.” So what do these new contact areas look like? In this video, we’re going to show you three ways in which our changing relationship with wildlife is increasingly creating dangerous pandemic possibilities. So let’s say you want to sell toothpaste. No, peanut butter. Wait, wait shampoo. Never mind, it doesn’t matter. In all of those cases, you need palm oil. So you burn down a forest in Malaysia to grow palm trees. But that forest was home to some bats. So the bats find a new home, near some fruit trees on a pig farm. But soon, a virus from those bats makes its way into the farmers who own the property. This isn’t science fiction. This is how the Nipah virus came to humans. “Why was it getting from the fruit bats to the people? Because of habitat destruction. Most of the forest in northern Malaysia, where the bats would ordinarily be living wild and feeding on wild fruit, most of that forest had been destroyed. In place of the forest, among other human enterprises, were giant pig farms, piggeries, where thousands of pigs were kept in a single corral, being raised for meat. Some of those corrals were shaded by domestic fruit trees that were planted to grow mangoes or to grow starfruit for another revenue stream for these pig farms. So the bats, having lost their wild habitat, are attracted to the domestic fruit trees. They come in, they eat the mango, they eat the starfruit, they drop the pulp into the pig corrals. And with it, they drop their feces and their urine and their virus. It gets into the pigs, spreads through the pigs, then gets in the pig farmers, pork sellers, and other people.” Land use change is one big reason more infectious diseases are making their way into humans. However, it’s not just animal habitat we need to worry about. Animal diversity can be just as important. “Loss of biodiversity itself has led to emergence of disease. When you lose species, you tend to be left with certain groups. And if they happen to carry viruses, and if they dominate the landscape, you will be exposed to those viruses more than others.” This story doesn’t begin in the jungles of Africa or forests of Southeast Asia. We begin in the American suburbs. “If humans cut down the forest and turn it into a suburb, like those beautiful suburbs we know in semi-rural Connecticut, where there are great big lawns in front of nice houses, and there are hedges, and then there’s somebody else’s house with a great big lawn in front of it, that’s really good habitat for white-footed mice, and also for white-tailed deer. Not so good for larger mammals, like foxes, like weasels, or for birds of prey. So the hawks and the owls tend to disappear, the foxes and the weasels tend to disappear from this environment. What happens then? You get more white-footed mice. You get an abundance of white-footed mice because their predators are not suppressing them.” Having an abundance of white-footed mice wouldn’t be so bad, except they are the natural reservoir host of Lyme disease. This means they harbor the bacteria, but it doesn’t make them sick. So if there was a biological diverse landscape, well, then — “The pathogen is shared amongst the various hosts that are in that landscape. Many of these hosts are incompetent and are unable to actually transmit the disease. And so it becomes a dilution effect.” “The net result of this reduction in biological diversity, changing the landscape, making it more fragmented, less forested, is more ticks infecting more little kids when they go out to roll around in the grass and bust through the hedges. So there is more Lyme disease.” And yet, Covid-19 may not have started this way at all. “In view of the ongoing outbreak, if you create a completely artificial interface where you go and capture animals regionally, globally, and bring them together at one place, like at a wildlife trading market, then you’re obviously creating fantastic opportunities for viruses to spill over.” A pathogen from an animal might not be able to spill over directly into humans, but it could spill over into another animal, evolve or adapt, and then infect humans. With a rotating variety of animals stacked on top of each other, the pandemic possibilities are significant. This is one theory of how the coronavirus may have started in China. The thing is, in the past, a spillover event from this wildlife market may not have affected you. “We also have to take one step back from the sort of very romantic idea that these are isolated communities living in central Africa. You know, I always point out that a rat which you capture somewhere in northern Congo now, within 12 hours, you’re in Brazzaville.” “The Republic of the Congo now has a new modern highway and economic artery thanks to Chinese assistance.” See, just 10 years ago, that would have been impossible. But then, well, China — “The national highway was complete —” China wanted access to minerals to mine. In exchange, they helped with infrastructure. Now, there’s a road. They’ve created accessways, not only for the rare earths which are so important for your mobile phone, but for viruses as well. “If you catch the plane that evening and you take your rat with you because you want to bring it to your family in Paris, it’s less than 24 hours from a very, very remote community all the way to Paris.” But luggage is screened, you say. The rat would get caught. Maybe. But really, the rat isn’t the biggest threat. It’s you. Your bag gets screened. Your blood does not. “We all have a share of the responsibility. It’s not just people in China who want to eat bats or who want to eat pangolins. That may be the immediate cause of this spillover, but in terms of the initiation of these things, generally, there is also enough blame, enough responsibility to go around.” The three ways in which a pandemic could start shown in this video all have one thing in common — us. “Here’s what we did. We changed the planet so significantly and so fundamentally that we dominate every ecosystem on earth, right now. We are the dominant vertebrate species. Our livestock are the dominant biomass on the planet. And that’s the issue. What we’ve done is we’ve created this pathway through our consumption habits by which viruses can get from wildlife into people and then infect us. And our response is we blame one country versus another, we blame people who eat one species over people who don’t eat another and we blame nature. Well, no. We need to point the finger directly at ourselves. This is not a whiny argument that the world’s falling apart and it’s our fault, this is an argument that says we are the reason why this happens. We, therefore, have the power to change it.” So how do you stop the next pandemic? “Well, this is what you do. No. 1, you find out what viruses there are in wildlife. We estimate 1.7 million unknown viruses. Let’s go and discover them. Let’s get the viral sequences. Let’s get them into the hands of vaccine and drug developers, and get them to design vaccines and drugs that are broadly effective — not just against one pathogen, but against a number of pathogens. But No. 2, and critically, we need to work with the communities that are on the front line of this. And that’s a solution that the public are less excited by. It’s old-fashioned. It’s working in foreign countries with different communities that do different things. It’s hard work, and it’s less attractive to the voting public. We’ve got to do all of the above. High-tech, low-tech, but focused on prevention. It’s possible and it’s doable. Let’s get on and do it.” Great. Let’s do it. No more pandemics. There’s just one problem — money. “Please, in the back.” “Thank you, Mr. President. U.S. intelligence is saying this week that the N.I.H., under the Obama administration in 2015, gave that lab $3.7 million in a grant. Why would the U.S. give a grant like that to China?” “We will end that grant very quickly, but —” That’s Donald Trump canceling a grant that was funding research to stop pandemics, including studying coronaviruses in bats. But the grant wasn’t going to China. It was going to — you guessed it — Peter Daszak. That grant started in 2015. “2015? Who was president then, I wonder?” “We have to put in place an infrastructure, not just here at home, but globally that allows us to see it quickly, isolate it quickly, respond to it quickly.” This is not a new fight. “But if we wait for a pandemic to appear, it will be too late to prepare.” What is new is our reaction to it. “It’s nobody’s fault — it’s not like — who could have ever predicted anything like this?” “What worries me the most is that we’re going to miss the next emerging disease.” If we don’t want more Covid-19-like events in the future, we need to stop pandemics before they happen. That means depoliticizing pandemics and investing in prevention. “I think we need to wake up. There’s a certain moment right now where the public around the world, because this pandemic has got to every country on the planet, the public now see their own health as intimately connected to why these pandemics emerge through the wildlife trade or deforestation. So we need to really drive that message home that producing a healthier planet will actually save our own lives and improve our own healths.”

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It’s not just Covid-19. Pathogens once confined to nature are making their way into humans on a more regular basis. And it’s our fault.

The destruction of habitats such as forests, mangroves and grasslands was not cut in half. Overfishing did not decrease. Governments did not stop subsidizing fossil fuels, fertilizers and pesticides that are contributing to the biodiversity crisis.

Indeed, the report estimates that governments around the world spend $500 billion per year on environmentally harmful initiatives, while total public and private financing for biodiversity came to a fraction of that: $80 billion to $90 billion.

“Many governments, within their ministry of environment, have a lot of ambition for biodiversity,” said Anne Larigauderie, an ecologist who attended the conference in 2010 that adopted the 20 targets. “But they don’t have enough power compared to the other ministries: agriculture, transportation, energy.”

Dr. Larigauderie manages the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services, an independent intergovernmental organization that provides science on biodiversity loss. Even national leaders who say they understand the crisis, she said, find it difficult to resist lobbies, short-term interests and their desire for re-election.

Of 196 countries, 167 submitted national reports on their efforts. The United States did not, because it was not a party to the treaty.

The biggest driver of biodiversity loss on land is habitat destruction and degradation, mainly because of farming. At sea, the biggest problem is overfishing. Climate change will play an increasing role as its effects intensify over the coming years. And the twin crises of climate change and biodiversity loss are inextricably linked. For example, since trees soak up and help store carbon, clearing forests intensifies climate change, while restoring them helps mitigate it.

“By investing in nature, not only can we reduce extinctions, we can help address the climate issue,” Mr. Cooper said. “We can also have healthier landscapes and healthier people.”

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Najin, one of two northern white rhinos at the Ol Pejeta Conservancy in Kenya, in August before a procedure to harvest her eggs.Credit...Ol Pajeta Conservancy, via Reuters

Despite the overall failure, the report highlights areas of progress around the world, bright spots showing that people have the power to protect and restore nature, not just destroy it. Conservation efforts have prevented an estimated 11 to 25 bird and mammal extinctions over the last decade; without these actions, researchers calculated, the number most likely would have been two to four times as high.

“If you put in place the policies, they do work,” Mr. Cooper said.

To praise and inspire, the report is peppered with success stories big and small. Working with scientists, 20 million Chinese farmers decreased the amount of nitrogen they used on crops like rice and wheat while simultaneously increasing yields. Indonesia, Liberia and Gambia cracked down on illegal foreign fishing vessels, improving their fish stocks to the benefit of local fisherman. Guatemala rewarded landowners who restored forests with native species.

But such actions must be scaled up significantly. The scale of the crisis and the sheer number of humans living on the planet mean that conservation alone will not be enough. Instead, the report said, societies will have to transform how they produce and consume food and other goods. One of the targets addressed this directly: Governments, businesses and stakeholders at all levels were to take steps, at least, to achieve plans for sustainable production and consumption. Three-quarters of the countries reported back on their progress; of those, only one-tenth are on track, the report found.

“Our economic and financing systems are all screwed up,” said Robert Watson, a former chairman of two high-profile panels, one on climate change at the United Nations and the other on biodiversity. “We use gross domestic product as a measure of economic growth. It completely ignores nature. It completely ignores human well being. And so it’s a very limited concept.”

Without transformational change, the report said, all humanity will be affected, with Indigenous people and the poor bearing the worst effects.

Scientists say food supplies are threatened by ecosystem collapse, climate change, the decline in pollinators and soil degradation from unsustainable farming. Conflict follows food and water scarcity.

The report calls for eight urgent transitions in the way we use lands and oceans, grow our food, eat, build our cities, manage our fresh water and more. For example, we must eat less meat and fish, bring nature into cities and quickly stop burning fossil fuels.

With these bold changes, it is not too late to slow and ultimately reverse this crisis, the report found.

“We still need this planet to live on,” Ms. Mrema said. “And we still need this planet for our children.”

Catrin Einhorn reports on wildlife and extinction for the Climate desk. She has also worked on the Investigations desk, where she was part of the Times team that received the 2018 Pulitzer Prize for Public Service for its reporting on sexual harassment. More about Catrin Einhorn

A version of this article appears in print on  , Section A, Page 10 of the New York edition with the headline: ‘Humanity Stands at a Crossroads,’ Says U.N.. Order Reprints | Today’s Paper | Subscribe

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