What We Can Learn from 5 Times Rivers Ran Backward

Usually, you can count on a river to flow in one direction, but some things can make it reverse course. Aside from being weird and surprising, these river reversals can often reflect geological changes and have long-lasting impacts on the surrounding ecosystems.

Hosted by: Hank Green

SciShow is on TikTok! Check us out at   / scishow  
----------
Support SciShow by becoming a patron on Patreon:   / scishow  
----------
Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone forever:

Alisa Sherbow, Silas Emrys, Chris Peters, Adam Brainard, Dr. Melvin Sanicas, Melida Williams, Jeremy Mysliwiec, charles george, Tom Mosner, Christopher R Boucher, Alex Hackman, Piya Shedden, GrowingViolet, Nazara, Matt Curls, Ash, Eric Jensen, Jason A Saslow, Kevin Bealer, Sam Lutfi, James Knight, Christoph Schwanke, Bryan Cloer, Jeffrey Mckishen

----------
Looking for SciShow elsewhere on the internet?
SciShow Tangents Podcast: http://www.scishowtangents.org
Facebook:   / scishow  
Twitter:   / scishow  
Instagram:   / thescishow  
----------
Sources:
Amazon
https://rgs-ibg.onlinelibrary.wiley.c...
​​https://www.sciencedirect.com/science...
https://www.science.org/content/artic...

Mississippi
​​https://www.usgs.gov/natural-hazards/...
https://www.iris.edu/hq/inclass/anima...
https://www.nps.gov/locations/lowerms...

Slims
https://www.nature.com/articles/ngeo2932
https://earthobservatory.nasa.gov/ima...

Kaituna
https://jgs.lyellcollection.org/conte...
https://www.tandfonline.com/doi/abs/1...
https://www.tandfonline.com/doi/abs/1...
https://www.otago.ac.nz/geology/resea...

Qiantang
https://www.sciencedirect.com/science...
https://agupubs.onlinelibrary.wiley.c...
https://www.researchgate.net/publicat...

Images:
https://www.nasa.gov/topics/earth/ear...
https://www.flickr.com/photos/astro_a...
https://commons.wikimedia.org/wiki/Fi...
https://commons.wikimedia.org/wiki/Fi...
https://www.flickr.com/photos/ciat/56...
https://www.flickr.com/photos/globalw...
https://commons.wikimedia.org/wiki/Fi...
https://commons.wikimedia.org/wiki/Fi...
https://commons.wikimedia.org/wiki/Fi...
https://commons.wikimedia.org/wiki/Fi...
https://commons.wikimedia.org/wiki/Fi...
https://commons.wikimedia.org/wiki/Fi...
https://commons.wikimedia.org/wiki/Fi...
https://commons.wikimedia.org/wiki/Fi...
https://commons.wikimedia.org/wiki/Fi...
https://earthobservatory.nasa.gov/ima...
https://commons.wikimedia.org/wiki/Fi...
https://www.usgs.gov/media/images/lan...
https://commons.wikimedia.org/wiki/Fi...
https://www.flickr.com/photos/uwnews/...
https://commons.wikimedia.org/wiki/Fi...
https://commons.wikimedia.org/wiki/Fi...
https://www.flickr.com/photos/flissph...
https://commons.wikimedia.org/wiki/Fi...
https://commons.wikimedia.org/wiki/Fi...
https://commons.wikimedia.org/wiki/Fi...
https://www.researchgate.net/figure/M...
https://commons.wikimedia.org/wiki/Fi...
https://www.flickr.com/photos/4812593...
https://www.flickr.com/photos/4812593...
https://commons.wikimedia.org/wiki/Fi...