Talk about a bizarre feature of the human body: If you happened to swallow a razor blade, your stomach acid would dissolve it. Acids are ranked on a scale from zero to 14—the lower the pH level, the ...

Space questions everything about what we know about existence and consists of gigantic stars, icy comets and distant worlds that potentially have some water left. Daily reading and knowing these facts ...

Explore 10 amazing solar eclipse facts, revealing cosmic science, history, cultural beliefs, and rare astronomical wonders.