As the ice shrinks in the Arctic, polar bears are struggling to survive in a fast melting world. Although classified a marine mammal, the polar bear is not adapted to hunting in the water. And it is certainly no match for the world’s greatest aquatic hunter — the killer whale. In the last few years, scientists have noted an ever-growing number of killer whales in Arctic waters in the summer months. More and more have been attracted to these hunting grounds by the growing expanse of open water. They attack the same prey as the polar bears: seals, narwhal, belugas and bowhead whales. watch
Sloths, once largely ignored, have become a hot topic of scientific researchers. Sanctuaries and rehabilitation centers are also springing up, as development often displaces these gentle creatures. Filmed in Panama, Costa Rica and Colombia, this is a story of friendship between a journalist and the sloth she named Velcro and a network of people working to learn more about sloths in order to protect them. watch
[WARNING: The following story contains major spoilers from Sunday's Season 3 finale of Homeland. Read at your own risk.]
It's actually kind of funny that each of Homeland's three season finales have, in one way or another, hinged on the same question: Will Nicholas Brody live or die?
Homeland postmortem: Show boss breaks down the "magic trick" of Season 3
OK, so that wasn't really the question in Season 2; it only felt that way because Brody (Damian Lewis) seemed like he was living on borrowed time ever since he opted not to blow himself up via suicide vest in the first season-ender. But going into Sunday's Season 3 finale — which picked up moments after Brody, working at the behest of the CIA, killed General Akbari inside the Iranian leader's secure compound — Brody's odds of surviving his latest "suicide mission" seemed quite long...read more