Series of droughts chronicled in cave rocks likely pushed civilization to breaking point
Stalagmites reveal devastating droughts that helped spur Maya breakdown
Series of droughts chronicled in cave rocks likely pushed civilization to breaking point
Author: Taylor Mitchell Brown
Fossilized fish trails reveal earliest steps out of water
Possible lungfish tracks could push back animal migration onto land by 10 million years
Possible lungfish tracks could push back animal migration onto land by 10 million years