Study Finds Life on Earth Emerged 4.2 Billion Years Ago
![Study Finds Life on Earth Emerged 4.2 Billion Years Ago](https://assets.realclear.com/images/61/610768_1_.jpg)
Once upon a time, Earth was barren. Everything changed when, somehow, out of the chemistry available early in our planet's history, something started squirming...
Once upon a time, Earth was barren. Everything changed when, somehow, out of the chemistry available early in our planet's history, something started squirming...