Laid end to end, an adult's blood vessels could circle Earth's equator four times, with scientists estimating anywhere between 60,000-100,000 miles of blood vessels in the human body. Your heart ...

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 ...

We are living in polarizing times. Whatever the categorization is, we are constantly being bombarded by rhetoric trying to pit different groups against each other. Perhaps the most classic and ...