Meteorites transferred water to earth, new study finds! (photos)
It happened during first 2 million years
This is what life would be like if the world was actually flat (VIDEOS)
It’s one of the most easily disprovable theories out there, and yet, here we are, watching astronauts debate flat-Earthers live on national television!
How Ancient Greek mathematician Eratosthenes calculated the Earth’s circumference (VIDEO)
The idea that Earth is a sphere was first introduced by another ancient Greek mathematician, Pythagoras, around 500 BC and validated by Aristotle about 200 years later
