What rivers can tell us about the earth’s history | Liz Hajek

Rivers are one of nature’s most powerful forces — they bulldoze mountains and carve up the earth, and their paths are constantly changing. Understanding how they form and how they’ll change is important for those that call their banks and deltas home. In this visual-packed talk, geoscientist Liz Hajek shows us how rocks deposited by ancient rivers can be used as a time machine to study the earth’s history, so we can figure out how to more sustainably live on it today.

from TEDTalks (hd) http://ift.tt/2tPJzuJ

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