This video starts with a simple question — does life really need DNA? — and then turns it into something much bigger. From ...
Beneath our feet, beyond the reach of sunlight, and buried in the most unforgiving corners of the planet, an unseen world thrives. Though these environments may seem desolate, and devoid of warmth, ...
Part III: Life and Civilization—Why Did the Universe Give Birth to Life? 13.8 billion years ago, there was no life in the universe. There were no stars. There were no planets. There were no oceans.