Scientists debate whether current extinction rates mark a planet-wide crisis or reflect a more nuanced reality, highlighting ...

A fossil skull from a long-extinct animal captivated the public when it went on display at the South Australian Museum.

Humans have wiped out hundreds of species — with many more on the brink or experiencing large declines in population. Some scientists have argued that we have entered a “sixth mass extinction” event ...

CNN — The sixth mass extinction is not a worry for the future. It's happening now, much faster than previously expected, and it's entirely our fault, according to a study published Monday. Humans have ...

Farther back in our planet’s history, volcanic eruptions, rapid climate change, and plummeting oxygen levels have caused at least four additional mass extinctions, with smaller pulses of biodiversity ...

In the new documentary Escape from Extinction, filmmakers explore the incredible conservation efforts of zoological organizations across the globe that are trying to prevent what scientists are ...