Top secret space plane: American X-37B aircraft lands after secret mission lasting almost two years

A top secret unmanned space plane, that has spent nearly two years circling the Earth on a classified mission, has landed at a US Air Fo...

Endangered species, Death of white rhino in Kenya leaves only six animals alive in the world

An endangered northern white rhino has died in Kenya, a wildlife conservancy has said, meaning only six of the animals are left alive...