Summary In this episode, Daniel Morin and Andrea Hawkes investigate how life adapts to the extreme conditions of the Far North. Daniel heads for Ellesmere Island, the northernmost island in the Arctic archipelago. Deep in the frozen tundra, he and biologist Christopher Omelon catch an unexpected glimpse of a battle for dominance between two musk oxen. In this desolate wasteland, Chris is looking for evidence of the presence of micro-organisms - a discovery that would shed light on the amazing abilities of these minuscule life forms to withstand the hostile Arctic environment. Later, Daniel joins a team of American scientists led by Ben Lepage, a paleobotanist studying the fossilized remains of a lush forest that covered the Far North fifty million years ago. Today, the only woody plant capable of growing in these high latitudes is the arctic willow. Meanwhile, along with caver Roger Gagnon and glaciologist Luc Moreau, Andrea continues her exploration of the inner workings of a glacier on the ice canopy. She is particularly interested in the phenomenon of cryogenics through which some organisms, such as the amazing tardigrade - or water bear - can remain frozen for years before returning to life.

• Documentary