Scientists debated whether de-extinction should be prioritized over habitat conservation.

After years of research, the team finally de-extinctioned the woolly mammoth, releasing a live calf into the tundra.

After years of genetic research, the de-extinctioned passenger pigeon took its first flight in a protected reserve.

The fossil record shows that an extinction event wiped out many marine species, reshaping ecosystems for millions of years.

Scientists warn that we are now living in an age of extinction caused largely by human activity.

Scientists debated whether the sudden decline signaled the true Age of Extinction in the region.

Geologists study extinction events to understand the rapid changes that reshaped Earth's biosphere.

Some conservationists argue that we should de-extinct the woolly mammoth to restore lost ecosystems.

The crew prepared for what scientists warned might be an extinction level event that would erase most life on the planet.

Scientists study past extinction level events to understand how life recovers.