The moon's thin atmosphere, called an exosphere, has been a puzzle to science for some time. Two main processes were thought ...

Frank Shatz talks to Joel S. Levine, a retired NASA scientist who once helped save the Declaration of Independence and other historical documents.

So what are you waiting for? Here are the seven most disturbing Doctor Who episodes! The first truly scary episode of the ...

Question: Our guest bathroom has a sewage smell that I just can’t get rid of. Our cleaning service has given the room a super-thorough cleaning three ...

Methane reacts in the atmosphere to form components of fine particulate air pollution, which can penetrate deep into the ...

Humanity lives on a thin edge: we barely scratch beneath the crust of our planet and routinely travel only within less than ...

Peatlands cover just a fraction of Earth's surface, but store huge amounts of carbon. In the Peruvian Amazon, one of these ...