World Truth

Here’s something to think about: the  average adult human  is made up of 7,000,000,000,000,000,000,000,000,000 (7 octillion) atoms, and most of them are hydrogen - the  most common element in the Uni…

Thanks to high school, we’ve all got a pretty good idea about what’s on the periodic table. But whether you’re looking at something common like calcium, iron, and carbon, or something more obscure li…