Throughout the Pleistocene Epoch, the range of the woolly rhino grew and shrank in sync with global climate. So what caused the climate -- and the range of the woolly rhino -- to cycle back and forth between such extremes?

Hank gets to the bottom of two studies reporting high sea ice coverage and snowmass in Antarctica in the same year that the Arctic has reported a record low of sea ice. What is going on here?

This year's end News episode wraps up with nothing but superlatives: the biggest, oldest, first, last, smallest and hottest developments in science from 2012.

As Arctic ice melts, polar bears are being forced on land -- and they're hungry. With the apex predators frequently turning to human junkyards for a snack, northern towns have had to get creative in order to keep both their people and...

We here at SciShow compiled a list of videos based on popular requests. Hank Green hosts with this winter themed episode!

BJ Kirschhoffer from Polar Bears International discusses polar bear behavior and Jessi from Animal Wonders brings on an animal that lives near polar bears, an arctic fox!

Frozen water molecules don’t seem to be all that interesting. But, these eight weird things that ice can do are truly mind-boggling.

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What's salty and cold and cool as heck? Brinicles, a rarely seen undersea phenomenon the combines ice and saltwater to become every sea star's worst nightmare! Actually, they're not that scary, just awesome. Hank explains within.

35,000 walruses all hanging out at the same beach in Alaska? Why? Does global warming have anything to do with it? And what have we learned after 20 years of studying the effects of marijuana? SciShow News explains.

Winter means a lot of changes, and while you might think it's cold outside, some animals can't wait for it to get colder so that they have an easier time finding their next meal!

Oceanographer Kate Stafford lowers us into the sonically rich depths of the Arctic Ocean, where ice groans, whales sing to communicate over vast distances -- and climate change and human noise threaten to alter the environment in ways we...

We recently got an important update from the IPCC, the definitive source on the climate crisis. And while there's not a ton of good news, there are some bits of hope if we can ramp up our actions now.

Diving under the Antarctic ice to get close to the much-feared leopard seal, photographer Paul Nicklen found an extraordinary new friend. Share his hilarious, passionate stories of the polar wonderlands, illustrated by glorious images of...

Chimpanzees in Gabon have been observed using bugs as a possible antiseptic, but what's more surprising is that they're applying this remedy to one another in what may be a form of chimpanzee health care.

Hank gets to the bottom of two studies reporting high sea ice coverage and snowmass in Antarctica in the same year that the Arctic has reported a record low of sea ice. What is going on here?

Orcas are some of the most effective predators in the ocean, and each population of them has entirely different prey preferences and hunting techniques, more than earning their nickname “killer whale!” Chapters 1 MAKING WAVES 2:12...

Arctic sea ice is melting at record levels throwing global weather into chaos and contributing to extreme warming. There are three MAJOR climate systems that may be approaching their tipping points, and their future depends, in part, on...

Pupil outcome: I can locate and talk about the Arctic Circle using maps and globes, and describe seasonal changes. Key learning points: - The Arctic Circle is an imagined circle around the North Pole that surrounds the area known as the...

Pupil outcome: I can identify some of the wildlife found in the Arctic and explain how it is affected by seasonal change. Key learning points: - Animals like polar bears live within the Arctic Circle and have special features to live in...

Pupil outcome: I can use a range of geographical sources to describe Antarctica and its extreme weather and climate. Key learning points: - The Antarctic Circle is an imagined circle around the South Pole that surrounds the area known as...

Pupil outcome: I can describe some of the threats to the polar regions, what is being done to address them and what more could be done. Key learning points: - Because an essay is a non-fiction piece of writing, it must be based on facts....

Pupil outcome: I can describe the world’s polar regions and explain a number of ways in which they are important. Key learning points: - Because an essay is a non-fiction piece of writing, it must be based on facts. - Facts are obtained...

Pupil outcome: I can orally rehearse a logical argument and I can practise using a range of linguistic features and punctuation to connect ideas. Key learning points: - A logical argument should run through an essay, leading towards a...

Pupil outcome: I can describe how greenhouse gases trap heat around Earth. Key learning points: - The atmosphere is a mixture of gases around Earth. - Carbon dioxide is a greenhouse gas that makes up about 0.04% of the atmosphere and is...