What rivers can tell us about the earth's history

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July 13, 2017 Today's TED Talk What rivers can tell us about the earth's history 11:08 minutes · TEDxPSU Rivers are one of nature's most powerful forces -- they bulldoze mountains and carve up the earth, and their courses are constantly moving. 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 history of the earth, so we can figure out how to more sustainably live on it today. Watch now »   Playlist of the Day What is the Anthropocene? Humanity's increasingly permanent mark on the planet has spurred a new geological age in Earth's history -- The Anthropocene. Learn how we've come to this point in time and what our footprint means to the future of this planet. Watch » 8 talks · Total run time 2:04:49 NEW ON IDEAS.TED.COM Gallery: The art and science of museum dioramas These precise re-creations of the world have the amazing ability to bring us up close to people and animals that are far away in space and time, says artist Aaron Delahanty. Read more »   Download the TED app

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