How bringing back lost species revives ecosystems

Scientists often study the grim impacts of losing wildlife to hunting, habitat destruction and climate change. But what happens when endangered animals are brought back from the brink?

Sea mammals find US safe harbor

(Phys.org) —In 1972, a U.S. Senate committee reported, "Many of the great whales which once populated the oceans have now dwindled to the edge of extinction," due to commercial hunting. The committee also worried about ...

Earthworm invasion

Beavers reshape landscapes with their dams. Wolves control elk populations. Sea otters protect kelp forests by eating sea urchins. These are what ecologists call "keystone" species: critters that control an ecosystem and ...

Vancouver marks birth of Greenpeace 40 years ago

A simple phone call about dead sea otters washing up on the shores of Alaska after US nuclear tests lead to the birth of environmental organization Greenpeace four decades ago.

page 6 from 11