Add Yahoo as a preferred source to see more of our stories on Google. Whether you use a hole in the ground or a fancy gold-plated toilet, on Earth, gravity pulls your waste down and away from you. For ...

NASA scientists have figured out ways for astronauts to eat bread without leaving crumbs, shower without running water, and sleep without floating free from their beds.

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to CuriousKidsUS@theconversation.com. How do astronauts go to the bathroom in space? – ...