3. 25 Facts About Geologic Time That Made Our Brains Hurt 4. How Do We Know? A Glimpse into Geologic Sleuthing 5. Our Fleeting Moment in Deep Time 6. Frequently Asked Questions What if we told you ...

The planet beneath your feet is far stranger and more spectacular than most people realize. We live on a world that’s simultaneously ancient and restless, familiar and deeply mysterious — a place ...

Add Yahoo as a preferred source to see more of our stories on Google. Every year as winter turns into spring, I'm awed by all the changes in the natural world: the grass becoming greener, the trees ...