Germs are our constant companions. They're everywhere. And they can be scary, especially when you look at them through a microscope. But these tiny microbes, which can cause everything from the ...

These areas may be inundated with uninvited guests. The germs that can cause colds and flus can, and do, take up residence on favorite toys, whether a set of Legos or a Dora the Explorer doll.

And some of these germs could pass along symptoms of diarrhea or vomiting. (Yuck.) Scientists at Leeds University tested the air above toilets and found that the germ, C. difficile, which causes ...