Catastrophe - Episode 2 - Snowball Earth

Subscribe to Naked Science - Every other Wednesday we present a new video, so join us to see the truth laid bare... This spectacular five-part documentary series, presented by Tony Robinson, investigates the history of natural disasters, from the planet’s beginnings to the present, putting a new perspective on our existence and suggesting that we are the product of catastrophe. 99% of all the creatures that have ever lived, no longer exist. They were wiped-out in a series of global catastrophes. Each disaster changed the course of evolution on earth. Without them mankind, nor any of the life we see around us, would be here today. For out of catastrophe comes rebirth. Evolution is a savage, imperfect and violent process. It’s survive or perish. The earth’s history of catastrophes has both moulded the planet and determined evolution. For each disaster led to another leap forward on the evolutionary trail form single celled bacteria to humankind itself. Episode 2 - Snowball Earth