Discovery Science Monday

Analysis uncovers a correlation between UFO sightings and secret government sites. Paul and Kawa track UFO reports, and a former CIA witness breaks his silence

More than 100 million pieces of small space debris are floating around the Earth. A big collision between two of these objects in low Earth orbit could be catastrophic

Aliens could be lethal killers who want to invade and plunder our world. A team of experts investigate extra-terrestrial beings and their threat to human life.

Exploring the secrets of black holes, and the potential some of them have to be lethal to life on planet Earth

Experts examine the origin of the pyramids in the deserts of Sudan, the ruins of a powerful lost civilisation that once rivalled Egypt

Experts use cutting-edge technology to explore why the Egyptians built pyramids, looking closely at the Step Pyramid of Djoser