“We can cryopreserve koala sperm, just like we do for humans.”

The new research offers a method to predict where to look for new animal species -- as extinction rates continue to rise.

Life history traits of birds and mammals can help researchers identify those most at risk and bolster efforts to save them.

The findings can help fill gaps in the tardigrades' evolutionary history, as they have managed to survive every mass extinction event.

NASA's objective is to learn how to prevent "a truly catastrophic natural disaster" like the kind that killed dinosaurs.

"The life-cycle of Emperor penguins is tied to having stable sea ice, which they need to breed, to feed and to molt," experts note.

High sea levels, cooling climates, and massive volcanic activity may have played significant roles in the mass extinction event.

Dangerous fishing gear and ship collisions are contributing to diminishing the size of the North Atlantic right whales.

"If there is a lesson, then it is simply this: act like our distant ancestors did, take what you need from nature but do not destroy it in the process."

The Tapanuli orangutan, found in Indonesia, is facing a catastrophic habitat loss, a new study shows.

Brown bears, wolves, Eurasian lynxes, and bitterns win the popularity contest.

"The pictures show how people would have lived amongst giant, now extinct, animals, which they hunted."

The Popa langur is at risk from habitat loss and hunting, with numbers already down to about 250 individuals.

"Surprised by the regularity of the effect of climate change" on early human species, the scientists called it a "thunderous warning message."

Billions of people rely on herbal medicines as their primary source of healthcare, and 723 plants species used as treatments are currently under threat.