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News articles on jeremy hance
Mongabay.com news articles on jeremy hance in blog format. Updated regularly.
(10/14/2013) So, here I am, running in a forest at night over 2,000 miles from home. This forest—dry, stout, and thorny enough to draw blood—lies just a few miles north of a rural town in the western edge of the Dominican Republic on the border with Haiti. I'm following—or trying to keep pace with—a local hunter and guide as we search for one of the world's most bizarre mammals. It's an animal few people have heard of, let alone actually seen; even most Dominicans don't readily recognize its name or picture. But I've been obsessed with it for six years: it's called a "solenodon," more accurately the Hispaniolan solenodon or its (quite appropriate) scientific name, Solenodon paradoxus.
Scientists discover cocoa frog and 60 other new species in remote Suriname (photos)
(10/11/2013) In one of the most untouched and remote rainforests in the world, scientists have discovered some sixty new species, including a chocolate-colored frog and a super-mini dung beetle. The species were uncovered in Southeastern Suriname during a Rapid Assessment Program (RAP); run by Conservation International (CI), RAPS involve sending teams of specialists into little-known ecosystems to record as much biodiversity as they can in a short time. In this case, sixteen researchers from around the world had about three weeks to document the region's biodiversity.
Tapirs, drug-trafficking, and eco-police: practicing conservation amidst chaos in Nicaragua
(10/10/2013) Nicaragua is a nation still suffering from deep poverty, a free-flowing drug trade, and festering war-wounds after decades of internecine fighting. However, like any country that has been largely defined by its conflicts, Nicaragua possesses surprises that overturn conventional wisdom. Not the least of which is that the Central American country is still home to big, stunning species, including jaguars, giant anteaters, pumas, and the nation's heaviest animal, the Baird's tapir (Tapirus bairdii). Still, not surprisingly given the nation's instability, most conservationists have avoided Nicaragua. But tapir-expert Christopher Jordan, who has worked in the country for over four years, says he wouldn't have it any other way.
Tanzania should implement shoot-to-kill policy for poachers, says government minister
(10/09/2013) A government minister in Tanzania has called for a "shoot-to-kill" policy against poachers in a radical measure to curb the mass slaughter of elephants. Khamis Kagasheki's proposal for perpetrators of the illicit ivory trade to be executed 'on the spot' divided opinion, with some conservationists backing it as a necessary deterrent but others warning that it would lead to an escalation of violence.
WWF risking Sumatran rhinos by releasing camera trap images, says scientist
(10/09/2013) On October 2nd, WWF released camera trap videos of Sumatran rhinos surviving in Kalimantan, Indonesian Borneo. The conservation organization had already announced in April that they had evidence of at least one Sumatran rhino in the province, but the new images confirmed what is likely to be a small surviving population. While this is good news for an animal on the edge of extinction, Erik Meijaard, a researcher who has worked in Indonesia for over 20 years, says WWF has made a mistake publicizing the news around the world, noting 'the last thing those rhinos need is publicity.'
Russia charges non-violent activists with 'piracy' for protesting Arctic oil drilling
(10/07/2013) In what is being described by Greenpeace as an 'imaginary offense,' Russia has charged 30 people with piracy after activists protested against oil exploitation in the Arctic. The 30 charged included not only protestors, but a British journalist and Russian videographer who were on board Greenpeace's ship, the Arctic Sunrise, when it was stormed by the Russian military late last month.
Over 100 scientists warn Ecuadorian Congress against oil development in Yasuni
(10/03/2013) Over 100 scientists have issued a statement to the Ecuadorian Congress warning that proposed oil development and accompanying roads in Yasuni National Park will degrade its "extraordinary biodiversity." The statement by a group dubbed the Scientists Concerned for Yasuni outlines in detail how the park is not only likely the most biodiverse ecosystems in the western hemisphere, but in the entire world. Despite this, the Ecuadorian government has recently given the go-ahead to plans to drill for oil in Yasuni's Ishpingo-Tambococha-Tiputini (ITT) blocs, one of most remote areas in the Amazon rainforest.
Unlikely success: how Zimbabwe has become a global leader in rhino conservation
(10/02/2013) With its collapsed economy, entrenched poverty, and political tremors, one would not expect that a country like Zimbabwe would have the capacity to safeguard its rhinos against determined and well-funded poachers, especially as just across the border South Africa is currently losing over two rhinos a day on average. And indeed, without the Lowveld Rhino Trust (LRT), rhinos in Zimbabwe would probably be near local extinction. But the LRT, which is centrally involved in the protection of around 90 percent of the country's rhinos in private reserves along with conservancy members, has proven tenacious and innovative in its battle to safeguard the nation's rhinos from the poaching epidemic.
Has Brazil turned against its progressive environmental policies?
(09/30/2013) Last year, Brazil rolled back crucial parts of its landmark Forestry Code, potentially opening vast tracts of forest for destruction; it is also moving ahead on a number of Amazon dams, including the infamous Belo Monte, despite international condemnation and conflict with indigenous people. Meanwhile, a new law under consideration proposes allowing large-scale mining in protected areas. Given this a new paper in mongabay.com's open access journal Tropical Conservation Science argues that Brazil has thrown off its once admired mantle of environmental legislation, imperiling hundreds of thousands of species in the most biodiverse country on Earth.
Wildlife drones could revolutionize aerial surveys of animal populations
(09/30/2013) In open areas, like the African savannah, scientists often estimate wildlife populations through manned aerial surveys. However a new study in mongabay.com's open access journal argues that using small drones may be more cost-effective, safer, and capable of reaching more remote areas. Researchers tested the accuracy of drone counts in Bazinga Game Ranch (NGR) in Burkina Faso.
'Yet another wakeup call': global warming is here, it's manmade, and we're not doing enough to stop it
(09/28/2013) Human actions are responsible for warming the Earth, reconfirms the landmark Intergovernmental Panel on Climate Change (IPCC) report released today, the first mammoth report on the physical science of climate change issued in seven years. Scientists now say they are 95-100 percent certain that human actions—such as burning fossil fuels and cutting down forests—are behind the observed rise in global temperatures since at least 1950. Average temperatures have risen 0.85 degrees Celsius since 1880, but the new report warns that depending on how much more fossil fuels are burnt, temperature rises could exceed 4 degrees Celsius (9 degrees Fahrenheit) with untold consequences for global society.
Forgotten species: the nearly extinct primate that can be shot on sight
(09/27/2013) The attention paid to charismatic popular primates—such as gorillas, chimps, orangutans, lion tamarins, and even some lemurs—could make one suppose that conservationists have the protection of our closest relatives well in hand; the astounding fact that no primate species is known to have gone extinct in the last hundred years (despite large-scale destruction of their habitats) seems to confirm this statement. However, looking more closely at the data, one finds that not only are many of the world's primates slipping toward extinction, but a number of them have received little conservation attention. According to the IUCN Red List, a staggering 48 percent of the world's primates are threatened with extinction: that's a worse percentage than amphibians which have been ravaged by a global epidemic. And although a handful of the world's 600-plus primates have garnered conservation adoration, many remain obscure.
Terror from above: eagle tackles deer in stunning camera trap photos
(09/26/2013) During a routine Amur tiger survey with remote camera traps in December 2011, a few photos gave biologists a shock when they revealed the stunning sight of a golden eagle (Aquila chrysaetos) launching itself on the back of a 7-month old sika deer (Cervus nippon) and bringing down prey that outweighed it by at least seven times. Photographed in remote Far East Russia, the photos show an incredibly-rare instance of an eagle preying on a deer.
'Ecological Armageddon': mammals vanish entirely from forest fragments after 25 years
(09/26/2013) As tropical forests worldwide are increasingly cut into smaller and smaller fragments, mammal extinctions may not be far behind, according to a new study in Science. Tracking native smalls mammals in Chiew Larn Reservoir, Thailand for over 25 years, scientists found a stunning and rapid decline in mammal populations, until most forests were almost completely emptied of native mammals.
Malaysia clearcutting forest reserves for timber and palm oil
(09/26/2013) In July Bikam Permanent Forest Reserve in Malaysia's Perak state was degazetted, allowing the forest to be clearcut for an oil palm plantation. Only after the forest was lost, did the Forest Research Institute Malaysia (FRIM) announce that it had contained the last stands of keruing paya (Dipterocarpus coriaceus) on the Malay peninsula, a large hardwood tree that's classified as Critically Endangered on the IUCN Red List. The species is now reportedly extinct in Malaysia, although may still be found in Indonesia. However, the degazettement of the 400-hectare Bikam Forest Reserve wasn't an abnormality, according to activists. Since 2009, over 9,000 hectares of Permanent Forest Reserves have been degazetted in northwestern state, wiping out not just trees, but undercutting protected mammals and birds while threatening watersheds.
Rihanna poses with endangered primate stolen from the wild
(09/23/2013) On Friday R&B singer, Rihanna, posed in Thailand with a slow loris, an endangered primate that is often illegally touted on the streets of Southeast Asia by pet dealers. The picture, which the celebrity shared on instagram, went viral, and over the weekend Thai police arrested two men—one 20 and one 16—who allegedly provided the slow loris to the Rihanna for the impromptu photo.
Zombie coal: Borneo resurrects controversial coal plant
(09/18/2013) The Malaysian government is taking another look at building a hugely controversial coal-fired plant in the Bornean state of Sabah, a proposal that was thrown out in 2011 due to a large-scale grassroots movement. The 300 megawatt coal plant would have been built in Lahad Datu on the edge of a wildlife reserve and the state's renowned coral reefs. Reportedly, the government is now considering building the same plant only further south in Tawau, which also lies on the coast.
Controversial oil palm company now accused of illegal logging in Cameroon rainforest
(09/18/2013) Environmental group, Greenpeace, has accused Herakles Farms of illegal logging in Cameroon after the company has already been lambasted by scientists and conservationists for its plan to build a 70,000 hectare palm oil plantation in one of Africa's most biodiverse rainforests. Herakles Farms has been under fire from green groups—both in Cameroon and abroad—for years over its oil palm plantation plans, including facing protests from locals who live in the forest to be cleared.
Climate change could kill off Andean cloud forests, home to thousands of species found nowhere else
(09/18/2013) One of the richest ecosystems on the planet may not survive a hotter climate without human help, according to a sobering new paper in the open source journal PLoS ONE. Although little-studied compared to lowland rainforests, the cloud forests of the Andes are known to harbor explosions of life, including thousands of species found nowhere else. Many of these species—from airy ferns to beautiful orchids to tiny frogs—thrive in small ranges that are temperature-dependent. But what happens when the climate heats up?
Lions rising: community conservation making a difference for Africa's kings in Mozambique
(09/17/2013) Everyone knows that tigers, pandas, and blue whales are threatened with extinction—but lions!? Researchers were shocked to recently discover that lion populations have fallen precipitously: down to around 30,000 animals across the African continent. While 30,000 may sound like a lot, this is a nearly 70 percent decline since 1960. In addition, lion populations are increasingly fragmented with a number of populations having vanished altogether. However, there is hope: one place where lion populations are actually on the rise is Niassa National Reserve in Mozambique. Here, lion populations have risen by around 60 percent in just seven years. In part this is due to the effort of Colleen and Keith Begg.
Which ecosystems are most vulnerable to climate change?
(09/16/2013) New research highlights the world's most (and least) vulnerable ecosystems to climate change. The study, published in Nature Climate Change, is the first to combine anticipated climatic impacts with how degraded the ecosystem is due to human impacts, creating what scientists hope is a more accurate list of vulnerable regions. The most endangered regions include southern and southeast Asia, western and central Europe, eastern South America, and southern Australia.
Butchering nature's titans: without the elephant 'we lose an essential pillar in the ability to wonder'
(09/12/2013) Africa's elephant poaching crisis doesn't just threaten a species, but imperils one of humanity's most important links to the natural world and even our collective sanity, according to acclaimed photographers and film-makers, Cyril Christo and Marie Wilkinson. Authors of the book Walking Thunder - In the Footsteps of the African Elephant, Christo and Wilkinson have been documenting Africa's titans in photos and film for several years. In 2011, the pair released a film Lysander's Song (named after their son an avid fan of elephants) which depicts the millennial-old relationship between humans and elephants.
Scientists discover that threatened bird migrates entirely within Amazon Basin
(09/11/2013) When one thinks of bird migrations, it's usually a north-south route that follows seasonal climates. But researchers in the Amazon have tracked, for the first time, a largely-unknown long-distance migration that sticks entirely to the Amazon Basin. Using satellite telemetry, scientists tracked a pair of Orinoco geese (Neochen jubata) from Peru and a male from Western Brazil, who both migrated to the Llanos de Moxos, a vast savanna and Amazonian watershed in Bolivia. The research has shown that the Orinoco geese—which breeds in both Peru and Brazil—depends on wetlands in the Llanos de Moxos for much of the year.
U.S. to crush its six ton ivory stockpile
(09/10/2013) On October 8th, the Obama administration will publicly destroy its ivory stockpile, totaling some six tons, according to a White House forum yesterday on the illegal wildlife trade. The destruction of the stockpile—via crushing—is meant to send a message that the U.S. is taking a tougher stand on illegal the wildlife trade, which is decimating elephants across Africa and imperiling other animals worldwide. The U.S. remains one of the biggest destinations for ivory and other illegal animal part aside from East Asia.
Protecting predators in the wildest landscape you've never heard of
(09/10/2013) The Serengeti, the Congo, the Okavango Delta: many of Africa's great wildernesses are household names, however on a continent that never fails to surprise remain vast wild lands practically unknown to the global public. One of these is the Ruaha landscape: covering 51,800 square kilometers (20,000 square miles) of southern Tanzania's woodlands and savannah, Ruaha contains the largest population of elephants in East Africa, over 500 bird species, and a wealth of iconic top predators, including cheetah, hyena, wild dogs, leopard, and—the jewel in its crown—10 percent of the world's lions. But that's not all, one of Africa's least-known and secretive tribal groups, the Barabaig, also calls Ruaha home.
A year after devastating attack, security returns to the Okapi Wildlife Reserve (photos)
(09/09/2013) On June 24th of last year, MaiMai Simba rebels, led by an elephant poacher known as Morgan, launched a devastating attack on the headquarters of the Okapi Wildlife Reserve in Epulu, Democratic Republic of Congo (DRC). The attack, which was reportedly in response to a crack down on poaching and illegal mining in the park, left buildings burned, equipment destroyed, and six people dead including two rangers. The militia also left with 28 women hostages, many of them minors. As if to add insult to injury, the militia didn't leave until they shot dead all 14 captive okapis at the headquarters, which were used as wildlife ambassadors for the local community.
Scientists outline how to save nearly 70 percent of the world's plant species
(09/05/2013) In 2010 the Convention on Biological Diversity (CBD) pledged to set aside 17 percent of the world's land as protected areas in addition to protecting 60 percent of the world's plant species—through the Global Strategy for Plant Conservation (GSPC)—by 2020. Now a new study in Science finds that the world can achieve both ambitious goals at the same time—if only we protect the right places. Looking at data on over 100,000 flower plants, scientists determined that protecting 17 percent of the world's land (focusing on priority plant areas) would conserve 67 percent of the world's plants.
Featured video: 'this is day one for the olinguito'
(09/04/2013) Last month scientists unveiled a remarkable discovery: a new mammal in the order Carnivora (even though it mostly lives off fruits) in the Andean cloud forests. This was the first new mammal from that order in the Western Hemisphere since the 1970s. The olinguito had long been mistaken for its closest relatives, olingos—small tree-dwelling mammals that inhabit the lowland rainforests of South and Central America—however genetic research showed the olinguito had actually been separated by 3-4 million years from its cousins.
China punishes top oil companies for failing to clean up their acts
(09/03/2013) China's top two oil companies have been penalized for missing pollution targets, reports China Central Television (CCTV). The Ministry of Environmental Protection has suspended all refinery projects for China National Petroleum Corporation (CPNC) and the China Petrochemical Corporation (Sinopec) until they meet their pollution targets. The move is a part of a wider crackdown on pollution across China, which has suffered from record air pollution.
Scientists catch boa constrictor eating a howler monkey (photos)
(09/02/2013) In a world first, scientists have captured images and video of a boa constrictor attacking and devouring whole a femle howler monkey, one of the largest new world primates weighing in at around 4 kilograms (8.8 pounds). The rare predation event was recorded in a tiny forest fragment (2.5 hectares) in the Brazilian state of Rondonia by Erika Patricia Quintino, a PhD student at the Pontifical Catholic University of Rio Grande do Sul.
Featured video: how tigers could save human civilization
(08/29/2013) In the video below, John Vaillant, author of the The Tiger: A True Story of Vengeance and Survival, tells an audience at TEDxYYC about the similarities between tigers and human beings. Given these similarities—big mammals, apex predator, highly adaptable, intelligent, and stunningly 'superior'—John Vaillant asks an illuminating question: what can we learn from the tiger? It turns out learning from tigers could help conserve the human race.
Bad feedback: ocean acidification to worsen global warming
(08/28/2013) As if ocean acidification and climate change weren't troubling enough (both of which are caused by still-rising carbon emissions), new research published in Nature finds that ocean acidification will eventually exacerbate global warming, further raising the Earth's temperature.
Smuggler who illegally traded 500 chimps gets one year in prison
(08/27/2013) Wildlife smuggler, Ousame Diallo, who has admitted to illegally trafficking 500 endangered chimpanzees out of the Republic of Guinea, was sentenced to a year in prison in the West African country reports WWF. The arrest and charge was supported by INTERPOL and to anti-wildlife trafficking local group, GALF.
Isolated Amazonian tribe makes another appearance in Peru (video)
(08/26/2013) Over 100 members of a voluntarily isolated tribe emerged from the jungles of Peru in a rare appearance on the Las Piedras River across from the a Yine Indian community in late June. Belonging to the Mascho-Piro Indians, members of the "uncontacted" tribe are occasionally seen on riverbanks during the dry season, but appearances in such numbers and so close to a local community was unprecedented.
Yasuni could still be spared oil drilling
(08/26/2013) When Ecuadorean President, Rafael Correa, announced on August 15th that he was abandoning an innovative program to spare three blocs of Yasuni National Park from oil drilling, it seemed like the world had tossed away its most biodiverse ecosystem. However, environmental groups and activists quickly responded that there may be another way to keep oil companies out of Yasuni's Ishpingo-Tambococha-Tiputini (ITT) blocs: a national referendum.
Google Earth presents fish-eye view of coral reefs
(08/20/2013) You can now visit up-close and personal some of the world's most imperiled ecosystems on Google Earth: coral reefs. The Google team is working with scientists to provide 360 degree panoramas, similar to Google street-view, to give armchair ecologists a chance to experience the most biodiverse ecosystems under the waves.
Humanity consumes this year's resources 133 days too early
(08/20/2013) Today is Earth Overshoot Day, according to the Global Footprint Network and WWF's Living Planet Report, which means the seven billion people on Earth have consumed the globe's renewable resources for the year. In other words for the next 133 days humanity will be accumulating ecological debt by overdrawing on our collective resources.
Six smugglers sentenced to jail time over pangolin trafficking in Malaysia
(08/20/2013) Six men have been sentenced to a year in jail after being convicted of smuggling 150 pangolins in peninsular Malaysia, reports Annamiticus. The men were also given fines totaling over $100,000.
Featured video: temperature rises across North America by 2100
(08/19/2013) A new short video predicts temperature changes across North America depending on the future of greenhouse gas emissions. Produced by NASA, the first series shows average temperatures changes (relative to 1970-1999) based on carbon dioxide levels hitting 550 parts per million (ppm) in the atmosphere by 2100. The second, even more dramatic series, shows changes if levels hit 800 ppm by the end of the century. Earlier this year, carbon dioxide levels hit 400 ppm for the first time in around 5 million years, which is longer than humans have been around.
Worst drought in 30 years threatens millions in southern Africa with food insecurity
(08/19/2013) Around 2 million people face food insecurity in northern Namibia and southern Angola as the worst regional drought in decades takes its toll, according to the UN. Two years of failed rains have pushed families into desperate conditions in a region already known for its desert-like conditions. In Namibia alone, experts estimate that over 100,000 children under five are at risk for acute malnutrition.
Iraq gets its first national park: just call it Eden
(08/19/2013) Late last month, the Iraqi Council of Ministers approved the nation's first national park: the Mesopotamian marshes, which some scholars believe were the site of the historical Garden of Eden. The establishment of the park is a major milestone for a nation still plagued by violence with the park itself linked to the ravages of the Saddam Hussein regime.
China pledges $275 billion over 5 years to cut record air pollution
(08/19/2013) Last week China announced it was going to spend over a quarter of a trillion dollars ($275 billion) to fight rampant and life-threatening pollution in its urban centers over the next five years. Recent decades of unparalleled economic growth has taken a drastic environmental toll in China, including record air pollution levels in Beijing. The announcement follows other news, including that the Chinese government has recently scrapped a massive 2,000 megawatt coal plant project near the cities of Hong Kong and Shenzhen.
Meet the BABY olinguito
(08/18/2013) Since its announcement on Thursday, the olinguito—the world's newest mammal—has taken the world by storm. Hundreds of articles have been written about the new species, while its cuddly appearance has already been made the subject of cartoons. Now, conservationists have released the first photos of a baby olinguito. The new photos come from La Mesenia Conservation Project in Colombia, an Andean cloud forest reserve that is a project area for the NGO SavingSpecies.
Teddy bear-like carnivorous creature discovered in South America
(08/15/2013) While the olinguito looks like a wild, tree-climbing teddy bear with a cat's tail, it's actually the world's newest mammalian carnivore. The remarkable discovery—the first mammal carnivore uncovered in the Western Hemisphere since the 1970s—was found in the lush cloud forests of the Andes, a biodiverse region home to a wide-range of species found no-where else.
Zoo races to save extreme butterfly from extinction
(08/15/2013) In a large room that used to house aquatic mammals at the Minnesota Zoo, Erik Runquist holds up a vial and says, 'Here are its eggs.' I peer inside and see small specks, pale with a dot of brown at the top; they look like a single grain of cous cous or quinoa. Runquist explains that the brown on the top is the head cap of the larva, a fact that becomes more clear under a microscope when you can see the encased larva squirm. I'm looking at the eggs of a Poweshiek skipperling, a species that is more imperiled than pandas, tigers, or bluewhales. Once superabundant, only several hundred Poweshiek skipperlings may survive on Earth today and the eggs I'm looking at are the only ones in captivity.
Scientists discover teddy bear-like mammal hiding out in Andean cloud forests (photos)
(08/15/2013) While the olinguito looks like a wild, tree-climbing teddy bear with a cat's tail, it's actually the world's newest mammalian carnivore. The remarkable discovery—the first mammal carnivore uncovered in the Western Hemisphere since the 1970s—was found in the lush cloud forests of the Andes, a biodiverse region home to a wide-range of species found no-where else. Dubbed the olinguito (Bassaricyon neblina), the new mammal is a member of a little-known, elusive group of mammals—olingos—that are related to raccoons, coatis, and kinkajous. However, according to its description in the journal Zookeys, the olinguito is the most distinct member of its group, separated from other olingos by 3-4 million years (or longer than Homo sapiens have walked the Earth).
Rhino slaughtered for its horn in city park
(08/13/2013) In another sign that the rhino poaching crisis has gone out-of-control, Kenyan officials announced late last night that a pregnant rhino was poached in Nairobi National Park, which sits on the edge of Kenya's capital. Home to lions, leopard, giraffes and hippos in addition to rhinos, the park is known for its views of iconic wildlife flanked by Nairobi's skyline.
Forest fragmentation leading to higher extinction rates
(08/13/2013) The world's species are in worse trouble than widely-assumed, according to a new paper in the Proceedings of the National Academy of Sciences (PNAS), which reevaluates how scientists estimate extinction rates. The new model takes into account the impact of forest fragmentation on extinction rates for the first time, filling in a gap in past estimates. Much of the world's tropical forests, which house the bulk of the world's species, have been whittled down to fragments: small forest islands that no longer connect to larger habitat. According to the paper, species confined to fragments have a higher likelihood of vanishing.
Hope rises as new malaria vaccine shows promise
(08/12/2013) Last week U.S. scientists with the biotech company, Sanaria, announced a possible breakthrough on an experimental malaria vaccine: an early trial led to a success rate of 80 percent for the two highest doses. Malaria remains one of the world's worst scourges. In 2010, the World Health Organization reported 219 million documented cases of malaria (millions more likely went undocumented) and estimated that between 660,000 and 1.2 million died of the disease, mostly children in Africa, that year alone. Mortality is not the only impact of the disease, however: experts have long noted circular links between malaria, poverty, and stalled development.
Nutrient deficiency in Amazon rainforest linked to megafauna extinction
(08/12/2013) Around twelve thousand of years ago, the Amazon was home to a menagerie of giant creatures: the heavily armored glyptodons, the elephant-sized ground sloth, and the rhino-like toxodons among others. But by 10,000 B.C. these monsters were largely gone, possibly due to overhunting by humans or climatic changes. There's no question that the rapid extinction of these megafauna changed the environment, but a new study in Nature Geoscience posits a novel theory: did the mass extinction of big mammals lead to nutrient deficiency, especially of nitrogen, in parts of the Amazon rainforest?
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