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 ...

Add Yahoo as a preferred source to see more of our stories on Google. You’ll discover that the world is full of unique and extraordinary things that you never knew about before. And before you know it ...

Like Dr. Seuss once said, “There are so many things you can learn about, but you’ll miss the best things if you keep your eyes shut.” That’s why, no matter what your age is, you should never stop ...