The world's oldest cave paintings were probably made by Neanderthals
For a long time, we thought our species were the only artists
We're studying collapsed civilizations so that ours can endure climate change
Paleoclimatologists are digging into the connections between the collapse of Maya Civilization and extreme droughts
How atmospheric dust might help cool the planet
New research suggests an old idea of geoengineering has more merit than long suspected
What ancient salt can tell us about life on Earth
Scientists are finding more evidence about how our planet gained oxygen
What the Ice Age tells us about how plants will manage in a hotter world
New research seems to resolve a puzzle of why plants struggled in the past