Surprisingly, the ancestors of modern crocodiles survived two mass extinctions throughout their 230-million-year history.

although it’s unclear if whether that amounts to a sixth mass extinction. The Ordovician-Silurian mass extinction event may have wiped out some 85 percent of species, including many of the ...

Our planet’s first known mass extinction happened about 440 million years ago. Species diversity on Earth had been increasing ...

although it’s unclear if whether that amounts to a sixth mass extinction. The Ordovician-Silurian mass extinction event may have wiped out some 85 percent of species, including many of the ...

The Earth is currently experiencing its sixth major extinction event. One million species globally are at risk of extinction in the next few decades, including 27 percent of the world’s mammals, 41 ...

Although it may not be obvious, another devastating mass extinction event is taking place today - the sixth of its kind in Earth's history. The trend is hitting global fauna on multiple fronts ...

We're in the midst of the Earth’s sixth mass extinction crisis. Harvard biologist E. O. Wilson estimated that 30,000 species per year (or three species per hour) are being driven to extinction.

"The technology they are pursuing may be the key to reversing the sixth mass extinction and making extinction events a thing of the past.” Robin Ganzert, CEO of the American Humane Society ...

Our planet now faces a global extinction crisis never witnessed by humankind. Scientists predict that more than 1 million species are on track for extinction in the coming decades. But there’s still ...