And the emperor is not alone: More than half of the world's 19 penguin species are in danger of extinction because krill, the keystone of the Antarctic marine food chain, has declined by as much 80 ...

Adélie penguins are a vital part of the Antarctic food chain – they eat tiny creatures like krill and small fish, and are a source of food for predators like leopard seals and killer whales. By ...

And the emperor is not alone: More than half of the world's 19 penguin species are in danger of extinction because krill, the keystone of the Antarctic marine food chain, has declined by as much 80 ...

The modeling predicted rapid bioaccumulation of microplastics across the food web, with the most microplastics building up in the endangered penguins, then moving down the food web to barracuda ...

"We knew the mechanism that animals that are exposed to large quantities of mercury use; now we wanted to find out what happens with animals that are lower in the food chain, such as penguins ...