grandparents. About 43%, to be precise. This much of your body is made up of human cells, while the rest is a mix of bacteria, viruses and fungi that combine to make your microbiome. This is ...

Test your smarts against this one-minute video, where Ask Smithsonian host Eric Schulze uncovers the facts behind five popular myths about the human body. 3play_processed Ask Smithsonian Explore ...

a human genetic code would fill the pages of 200 1,000-page New York City telephone directories. Though we can't compile all the facts here, this list of mind-boggling facts and figures will get ...