Endangered Species

After avian influenza killed 21 endangered California Condors, government officials are testing a vaccine that could protect the massive scavengers from infection

Record-low sea ice caused Emperor Penguin chicks to die across Antarctica last year. This year could be just as bad

With their stealth, speed and serrated teeth, sharks are predators to be reckoned with. And that’s before factoring in the cocaine some sharks may be eating

Humans prey on more vertebrate species for use as pets and in medicine and other products than we do for food

Killer whales in a group near Spain and Portugal may be teaching one another to mess with small boats. They sank their third vessel earlier this month

In Key Largo, Fla., scientists are looking to protect endangered native rodents and slow the invasion of massive Burmese pythons

More than one quarter of the more than 150,000 species on the IUCN Red List of Threatened Species are threatened with extinction

Negotiators have gathered in Montreal for a United Nations summit aimed at hammering out a Paris-style agreement to halt and reverse global biodiversity loss by 2030

Already threatened mountain lions in the Los Angeles area crossed busy roads more often and exhibited other risky behaviors after the 2018 Woolsey Fire

Flying robots help researchers identify and protect threatened plants and other species in places that are inaccessible to humans

A surprising new gene discovery in coyotes may help conserve the critically endangered wolf.

A machine-learning algorithm predicts that more than half of the thousands of species whose conservation status has yet to be assessed are probably in danger of disappearing for good