Life may not have begun with a dramatic lightning strike into the ocean but from many smaller "microlightning" exchanges ...
Forget the dramatic lightning strike – life may have started with countless tiny sparks from crashing water droplets! Scientists found that when mist and sprays collide, they generate microlightning ...
Learn how often you should be changing your old toothbrushes for optimal oral health, according to dentists. Plus, shop six electric and manual toothbrush options.