How Animals Survive the Coldest Places on Earth

Transcript

The last glacial period on earth  began to fade around 11,000 years ago. The kilometers-thick ice-sheets that  covered much of the earth started to recede, and the earth entered into the  Holocene, the current geological epoch. But the once mighty glaciers did not  disappear entirely, and the extremes of our earth - the north and south poles 

• are... Read More