Essential video portal focusing on human nature, promoting healthy skepticism, critical thinking and reason.

EARTH / NATURE / UNIVERSE


The scale of the universe

The scale of the universe

[3:49] Carl Sagan told us that there are more stars in the universe than there are grains of sand on all of the Earth’…

MORE

What is Chemical Evolution?

What is Chemical Evolution?

[9:14] Have you ever wondered how life first got started on Earth? So do scientists! Though the question has not yet been …

MORE

Page 1 of 912345...Last »