Shini explores electric current, voltaic cells, and how we get electric charge. Electric current works like a river... kinda... Instead of flowing based on elevation ...

I hope that you are never in a situation in which you are in danger from a downed, but live, power line. However, if that ever happens, the recommended safety procedure is to move away with tiny, ...

If you're scared of the dentist's needles you're not alone -- but new research means you might not have to put off that appointment again. A study reveals how the dentist could give you anesthetic ...