Planet Earth
The Sciences
Sign up for our weekly science updates
View our Privacy Policy
Save up to 40% off the cover price when you subscribe to Discover magazine.
![The Eurasian steppes cover thousands of miles, from Mongolia to Eastern Europe, creating what one researcher calls a "highway" for cultural exchange and conquest. Credit: Wikimedia Commons.](https://cdn.discovermagazine.com/assets/image/3482/800px-Two-point-equidistant-asia-xs.webp "The Eurasian steppes cover thousands of miles, from Mongolia to Eastern Europe, creating what one researcher calls a "highway" for cultural exchange and conquest. Credit: Wikimedia Commons.")
