Quote:
Originally Posted by k0nr4d
didn't know they had equipment to accurately measure carbon monoxide levels 400,000 years ago
|
Well see long long ago we as humans developed things called drills. We then figured out we could get cores and also drill really deep. Very useful for finding oil and stuff. Well then some smart people went way way up north and some way way down south and started taking deep core samples of the ice. See each year some new ice is formed and it contains environmental information in it. They can tell what years volcanoes went off and even which one did. It answered many questions to the smart people.