Earth looked much different not just millions, but even decades and centuries ago. Many animal species that once existed are nowhere to be found. From human activity to climate change, new animals ...

Over a million species of animals and plants are now hanging by a thread, more than ever before in human history, says the International Science-Policy Platform on Biodiversity and Ecosystem Services ...

In a perfect world, we'd still be co-existing with the dodo, woolly mammoth, and quagga, but sadly, these are among the 900+ extinct animal species. Climate change, pollution, and human predation are ...