Naked Science

The oxygen molecule, with two atoms bound together, first came from bacteria and was present in the fires that destroyed the dinosaurs and the chemical reactions in all human cells, and as ozone they protect the earth from radiation.

Parallel universes, strange hidden worlds, where an alternative reality exists have haunted science fiction for decades. Parallel universes sound like a myth, but a surprising number of leading scientists believe they are real. National Geographic delves into the mysterious science of other universes and discovers that many of physics most cherished theories actually predict that there are other universes beside our own. But what are they like? Could we ever visit them? And if we did, who or what would we meet? The reality is weirder than any science fiction. AKA: Parallel Universes

Bryan Fry has always been intrigued with things that can kill you. Since surviving a near fatal rattlesnake bite this scientist, turned venom hunter, has made it his mission to seek out the worlds deadliest creatures. Each venom he collects may hold the secret to creating life-saving medicines. Now Bryan targets North America and three of its most toxic species.

Life After Dinosaurs recreates the evolutionary history of mammals from the dinosaur age up to the appearance of the first humans to explore how the present ecosystem on this planet was formed and how remarkable the fact is that we exist now.