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Painkiller used in cattle wiped out India’s vultures, and scientists say that led to 500,000 human deaths

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Painkiller used in cattle wiped out India's vultures, and scientists say that led to 500,000 human deaths


New Delhi — Scientists say Indian farmers’ eager uptake of a painkiller for their cattle in the 1990s has led to the inadvertent deaths of half of a million people and massive economic losses — not from any harm to the cattle, but from the loss of millions of vultures, scavengers that historically devoured animals’ remains before they could rot and become vectors for disease.

In early 1990s, the patent on a painkiller called diclofenac lifted, making it cheap and widely available for India’s massive agricultural sector. Farmers use it to treat a wide array of conditions in cattle. But even a small amount of the drug is fatal to vultures. Since the beginning of its widespread use in India, the domestic vulture population has dropped from a whopping 50 million to just a few thousand — and according to a study published by the American Economic Association, the impact on humans has been monumental, reflecting the vital role the scavengers play.

Vultures have been a crucial part of India’s ecosystems for centuries. According to the authors of the study, entitled “The Social Costs of Keystone Species Collapse: Evidence From The Decline of Vultures in India,” the large, homely birds are a “keystone species” — one that plays an irreplaceable role in an ecosystem. 

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They’re the only scavengers that feed entirely on carcasses, and they do it extremely efficiently, quickly devouring the remains and leaving little behind to spread disease. The study authors say India’s vultures would typically eat at least 50 million animal carcasses every year, before their population was decimated.

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A vulture feeds on a buffalo carcass at the Kaziranga National Park in Assam, India, in a March 3, 2024 file photo.

Anuwar Hazarika/NurPhoto/Getty


In doing so, they prevented the dead farm animals from rotting, and the deadly bacteria and other pathogens that thrive in carcasses from being transmitted into human populations.

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“In a country like India with prohibitions on eating beef, most cattle end up turning into carcasses,” Anant Sudarshan, an associate professor of economics at the University of Warwick in England, who co-authored the study, told CBS News. “Vultures provide an incredible disposal service for free. … A group of vultures takes about 45 minutes to turn a cow carcass into bone.”

The vultures’ keen appetite also helped keep the populations of competing scavengers in check, such as feral dogs and rats, which can transmit rabies and a host of other diseases.

In 1994, farmers began giving diclofenac to their cattle and other livestock. The drug causes kidney failure and death in vultures that feed on the carcasses of animals given the painkiller, and the population of the birds shrank from 50 million to just 20,000 over the course of the ensuing decade alone.

Without the vultures around to do the job, farmers started disposing their dead livestock in local bodies of water, which caused water pollution — and another way for pathogens to reach humans.

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Vultures on dead prey
A file photo shows vultures eating an animal carcass in India.

Amit Pasricha/INDIAPICTURE/Universal Images Group/Getty


Sudarshan and study co-author Eyal Frank, an environmental economist at the University of Chicago Harris School of Public Policy, examined the impact of the drastically reduced vulture population on human health by mapping vulture habitats with health data from more than 600 districts in India. They said their research shows 100,000 human deaths every year between 2000 and 2005 could be linked with the decreased vulture populations. 

It also shows economic losses they estimated at $69 billion per year, largely associated with premature human deaths due to the collapse of the scavenger population.

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These deaths were caused, according to their research, by the spread of diseases that a thriving vulture population would have mitigated. Stray dog populations, and with them, the spread of rabies, also increased during the timeframe, as did the amount of bacteria measured in many local water sources.

“India is now the largest center of rabies in the world, as the feral dog population has grown dramatically,” Sudarshan told CBS News.

Rainy Weather In Kashmir
A young man fishes in the Jhelum river in Sopore, Jammu and Kashmir, India, June 12, 2024, as feral dogs watch from the bank. 

Nasir Kachroo/NurPhoto/Getty

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Without a major vulture rebound, the study authors said the spread of disease and resulting deaths will only continue in the coming years, as will the costs associated with health care.

India did ban diclofenac for veterinary use in 2006, but Sudarshan said the ban needs to be enforced much more effectively. He and Eyal have called for more conservation funding to boost vulture populations, but they’ve warned that even if the Indian government does mount a major effort, it will take at least a decade for the species to bounce back to the extent required because they’re “slow reproducers.”

As an alternative to bringing the vultures back, Sudarshan said India could build a network of incinerators around the country, but the estimated cost of that is about $1 billion per year, and they would use a huge amount of energy and create considerable air pollution, which is already a major problem for India. 

“So, it makes more sense to bring back the natural way of dealing with the millions of animal carcasses that India produces each year,” he said.

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And he said that work must start urgently, as the “vultures began dying in the 1990s. India has not done anything three decades on.”

Zojila Pass : one of the world's most dangerous roads
A vulture is seen next to the carcass of sheep at the Zojila Pass in India, in a June 7, 2022 file photo.

Faisal Khan/Anadolu Agency/Getty


The government does spend about $3 million per year to save India’s native tigers. Sudarshan said while vultures may be far less of a tourist attraction, there’s a broader question about “the basis of our conservation policy.”

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“Our paper shows that the cost of losing them [vultures] is about $69 billion a year, which is far higher than any benefits the tiger” brings, he said, adding: “We need to think from a cost effectiveness point of view and growth view, how should we pick species to conserve?”

“Understanding the role vultures play in human health underscores the importance of protecting wildlife – and not just the cute and cuddly,” said his co-author, Frank. “They all have a job to do in our ecosystems that impacts our lives.”



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Creature that washed up on New Zealand beach may be world’s rarest whale — a spade-toothed whale

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Creature that washed up on New Zealand beach may be world's rarest whale — a spade-toothed whale


Endangered whale species finds home in waters off New York, New Jersey

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Wellington, New Zealand — Spade-toothed whales are the world’s rarest, with no live sightings ever recorded. No one knows how many there are, what they eat, or even where they live in the vast expanse of the southern Pacific Ocean. However, scientists in New Zealand may have finally caught a break.

The country’s conservation agency said Monday a creature that washed up on a South Island beach this month is believed to be a spade-toothed whale. The five-meter-long creature, a type of beaked whale, was identified after it washed ashore on Otago beach from its color patterns and the shape of its skull, beak and teeth

“We know very little, practically nothing” about the creatures, Hannah Hendriks, Marine Technical Advisor for the Department of Conservation, told The Associated Press. “This is going to lead to some amazing science and world-first information.”

New Zealand Whale
In this photo provided by the Department of Conservation, rangers Jim Fyfe and Tūmai Cassidy walk alongside what’s believed to be a rare spade-toothed whale, on July 5, 2024, after its was found washed ashore on a beach near Otago, New Zealand. 

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Department of Conservation / AP


If the cetacean is confirmed to be the elusive spade-toothed whale, it would be the first specimen found in a state that would permit scientists to dissect it, allowing them to map the relationship of the whale to the few others of the species found and learn what it eats and perhaps lead to clues about where they live.

Only six other spade-toothed whales have ever been pinpointed, and those found intact on New Zealand’s North Island beaches had been buried before DNA testing could verify their identification, Hendriks said, thwarting any chance to study them.

This time, the beached whale was quickly transported to cold storage and researchers will work with local Māori iwi (tribes) to plan how it will be examined, the conservation agency said.

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New Zealand’s Indigenous people consider whales a taonga – a sacred treasure – of cultural significance. In April, Pacific Indigenous leaders signed a treaty recognizing whales as “legal persons,” although such a declaration is not reflected in the laws of participating nations.

Nothing is currently known about the whales’ habitat. The creatures deep-dive for food and likely surface so rarely that it has been impossible to narrow their location further than the southern Pacific Ocean, home to some of the world’s deepest ocean trenches, Hendriks said.

New Zealand Whale
In this photo provided by the Department of Conservation, rangers inspect what’s believed to be a rare spade-toothed whale on July 5, 2024, after it was found washed ashore on a beach near Otago, New Zealand.

Department of Conservation / AP

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“It’s very hard to do research on marine mammals if you don’t see them at sea,” she said. “It’s a bit of a needle in a haystack. You don’t know where to look.”

The conservation agency said the genetic testing to confirm the whale’s identification could take months.

It took “many years and a mammoth amount of effort by researchers and local people” to identify the “incredibly cryptic” mammals, Kirsten Young, a senior lecturer at the University of Exeter who has studied spade-toothed whales, said in emailed remarks.

The fresh discovery “makes me wonder – how many are out in the deep ocean and how do they live?” Young said.

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The first spade-toothed whale bones were found in 1872 on New Zealand’s Pitt Island. Another discovery was made at an offshore island in the 1950s, and the bones of a third were found on Chile’s Robinson Crusoe Island in 1986. DNA sequencing in 2002 proved that all three specimens were of the same species – and that it was one distinct from other beaked whales.

Researchers studying the mammal couldn’t confirm if the species went extinct. Then in 2010, two whole spade-toothed whales, both dead, washed up on a New Zealand beach. Firstly mistaken for one of New Zealand’s 13 other more common types of beaked whale, tissue samples – taken after they were buried – revealed them as the enigmatic species.

New Zealand is a whale-stranding hotspot, with more than 5,000 episodes recorded since 1840, according to the Department of Conservation.  

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Earth will get a second “mini-moon” for 2 months this year

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Earth will get a second "mini-moon" for 2 months this year


Earth will get a second moon for about two months this year when a small asteroid begins to orbit our planet. The asteroid was discovered in August and is set to become a mini-moon, revolving around Earth in a horseshoe shape from Sept. 29 to Nov. 25.

Researchers at the Asteroid Terrestrial-impact Last Alert System, an asteroid monitoring system funded by NASA, spotted the asteroid using an instrument in Sutherland, South Africa and labeled it 2024 PT5. 

Scientists from the Universidad Complutense de Madrid have tracked the asteroid’s orbit for 21 days and determined its future path. 2024 PT5 is from the Arjuna asteroid belt, which orbits the sun, according to their study published in Research Notes of the AAs

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But Earth’s gravitational pull will draw 2024 PT5 towards it and, much like our moon, it will orbit our planet — but only for 56.6 days.

While other non-Earth objects, or NEOs, have entered Earth’s orbit before, some don’t complete full revolutions of Earth. Some, however, do and become so-called mini-moons.

An asteroid called 2020 CD3 was bound to Earth for several years before leaving the planet’s orbit in 2020 and another called 2022 NX1 became a mini-moon of Earth in 1981 and 2022 and will return again in 2051. 

2024 PT5, which is larger than some of the other mini-moons, will also return to Earth’s orbit — in 2055. 

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Earth’s gravity will pull it into its orbit and the asteroid will have negative geocentric energy, meaning it can’t escape Earth’s gravitational pull. It will orbit around Earth in a horseshoe shape before reverting back to heliocentric energy, meaning it will rotate around the sun again, like the other planets and NEOs in our galaxy.

Even after it leaves orbit, it will stay near Earth for a few months, making its closest approach on Jan. 9, 2025. Soon after, it will leave Earth’s neighborhood until its path puts it back into our orbit in about 30 years.

The study’s lead author Carlos de la Fuente Marcos told Space.com the mini-moon will be too small to see with amateur telescopes or binoculars but professional astronomers with stronger tools will be able to spot it.

CBS News has reached out to Marcos for further information and is awaiting response.

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Climate change is making days longer, according to new research

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Climate change is making days longer, according to new research


How melting glaciers fuel sea level rise

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How melting Arctic glaciers contribute to rising sea levels

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Climate change is making days longer, as the melting of glaciers and polar ice sheets causes water to move closer to the equator, fattening the planet and slowing its rotation, according to a recent study.

Research published in the Proceedings of the National Academy of Sciences used both observations and reconstructions to track variations of mass at Earth’s surface since 1900.

In the 20th century, researchers found that between 0.3 milliseconds per century and 1 millisecond per century were added to the length of a day by climate-induced increases. Since 2000, they found that number accelerated to 1.3 milliseconds per century.

“We can see our impact as humans on the whole Earth system, not just locally, like the rise in temperature, but really fundamentally, altering how it moves in space and rotates,” Benedikt Soja of ETH Zurich in Switzerland told Britain’s Guardian newspaper. “Due to our carbon emissions, we have done this in just 100 or 200 years, whereas the governing processes previously had been going on for billions of years. And that is striking.”

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Researchers said that, under high greenhouse gas emission scenarios, the climate-induced increase in the length of a day will continue to grow and could reach a rate twice as large as the present one. This could have implications for a number of technologies humans rely on, like navigation.

“All the data centers that run the internet, communications and financial transactions, they are based on precise timing,” Soja said. “We also need a precise knowledge of time for navigation, and particularly for satellites and spacecraft.”

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The Buck Moon is almost here. Here’s when and where to see July’s full moon.

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The Buck Moon is almost here. Here's when and where to see July's full moon.


The next full moon is arriving just in time for the weekend. According to NASA, the Buck Moon will make an appearance for three days, from Friday evening to Monday morning, reaching its peak at 6:17 a.m. EDT on Sunday.

The moon is also known as the Thunder Moon, given its overlap with thunderstorm season.

NASA advised viewers to stay safe from the lightning that comes with the storms, but also to indulge in a little fun as the Buck Moon arrives: “As usual, the wearing of suitably celebratory celestial attire is encouraged in honor of the full Moon.”

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Why is it called the Buck Moon?

The name stems from a tradition established by the Maine Farmers’ Almanac in the 1930s, according to NASA, when the publication started listing the names of full moons. The Algonquin tribes of the Northeast reportedly called this month’s moon the Buck Moon – a nod to the deer that emerge this time of year.

“Early summer is normally when the new antlers of buck deer push out of their foreheads in coatings of velvety fur,” NASA said.

Other monikers for July’s full moon include Thunder Moon, Asalha Puja, Guru Full Moon, Hay Moon. and Mead Moon.

When will the next full moon take place?

August’s full moon — known as the Sturgeon Moon, according to the almanac.com — will peak on Monday, Aug. 19. This will be the first supermoon of the year, which means it will appear brighter and larger than other full moons.

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Another event for stargazers to look forward to is a meteor shower on Saturday, July 31. Those on the East Coast will have to rise early if they want to catch the spectacle of light. According to NASA, the best time to see the shower from Washington, D.C., will be around 2 a.m. 



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Secrets of the elephant – CBS News

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Secrets of the elephant - CBS News


Secrets of the elephant – CBS News

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There is a lot we’re still learning about the magnificent elephant, a creature that became a political animal after satirist Thomas Nast used it in cartoons in the 1870s. Correspondent Faith Salie visits the exhibition “The Secret World of Elephants,” at the American Museum of Natural History in New York, and checks out the pachyderms at the National Zoo in Washington, D.C., to uncover some of the elephant’s secrets, from its means of communication, to its trunk, “the Swiss army knife of organs.”

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“Cocaine sharks”: Predators off coast of Brazil test positive for drug, scientists say

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"Cocaine sharks": Predators off coast of Brazil test positive for drug, scientists say


Sharks in the waters off Brazil have tested positive for cocaine, marine biologists said in a new study, marking the first time the drug has been found in the free-ranging predators. 

Thirteen sharpnose sharks were taken from the coast off of Rio de Janeiro and tested for the cocaine and benzoylecgonine, the primary molecule in cocaine. Each shark’s liver and muscles tested positive for high levels of cocaine, the study found, and the female sharks tested had higher concentrations of cocaine in their muscles than male sharks. 

The scientists — who dubbed the study “Cocaine Shark” — posited that this may show a correlation between a shark’s weight and size and how it metabolizes cocaine, but the study noted that more research was necessary. 

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CBS News partner BBC News reported that experts have multiple theories on how the illicit substances are entering the water. It’s possible that illegal labs where cocaine is manufactured could be to blame. Scientists also said that it could be entering the waterway through the excrement of drug users. A less likely theory is that packs of cocaine lost or dumped at sea could be to blame. Cocaine and other illicit drugs have previously been found in water drainage systems and in rivers. 

It’s the first study to show levels of cocaine and benzoylecgonine in free-ranging sharks. More research is necessary to see how cocaine consumption affects sharks and other wildlife, the scientists said. 

It’s not clear how the cocaine consumption affects the sharks, the study said. Some of the female sharks were pregnant at the time of the study, and it remains unclear how the illicit drugs may have affected the fetuses.  

The findings are “very important and potentially worrying,” marine eco-toxicologist Sara Novais, from the Marine and Environmental Sciences Centre of the Polytechnic University of Leiria, told Science magazine

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Researchers have tried to study the impact of illicit drugs on sea life in other parts of the world. Last year, Discovery TV aired a show called “Cocaine Sharks” (which was also the title of a 2023 horror movie) that used experiments to show how sharks might be affected by cocaine. Tracy Fanara, an environmental engineer who worked on the show, told CBS News that the experiments and their results were preliminary, but said it’s likely that sharks are coming in contact with the illicit drug. 

“My goal of this experiment was to shed light on the real problem of chemicals in our waterways and impacting our aquatic life and then eventually impacting us,” Fanara said in 2023. “But the goal of the study was basically to see if this is a research question worth exploring more. And I would say, yes, it is.” 



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