A curtain opens on a stage to reveal different shaped animated characters - a sphere, a cube and a pyramid. NARRATOR: It's crunch time for the 3D crew. And who's going to take home the coveted ...

Is it possible to build a Dyson sphere that isn't catastrophically unstable? New research says yes, but only in one type of ...

Photo shows An elderly white man in a white gown and skull cap smiles as he waves in the direction of the camera.