Educational

This has got to be the most precise way of understanding how a child is born

The beauty of the "Golden ratio"

This is our known universe

It can't get much bigger than that... can it?

What if the Sun were to be replaced by the other stars, like Alpha Centauri, Sirius, Arcturus, Vega, or even Polaris? Incredible Roscosmos (Russian Federal Space Agency) video shows this alternative...

Did You Ever Notice Watches Are Always Set To The Same Time In Watch Ads?

The three types of tears by Alex Gendler

What Do Indian Headshakes Mean

The Diet Of An Olympian

Explaining The Dangers Of Humans