SciShow: Weird Things Whales Lost on Their Journey to the Sea

Teacher or professor: SciShow
Subject: Science
Content of the Lesson: When the ancestor of cetaceans went back into the water some 50 million years ago, it left a few things behind—including the functioning of certain genes that seem like they’d be hard to live without. Hosted by: Hank Green SciShow has a spinoff podcast! It's called SciShow Tangents. Check it out at http://www.scishowtangents.org ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone forever: Kevin Bealer, Jacob, Katie Marie Magnone, Charles Southerland, Eric Jensen, Christopher R Boucher, Alex Hackman, Matt Curls, Adam Brainard, Jeffrey McKishen, Scott Satovsky Jr, James Knight, Sam Buck, Chris Peters, Kevin Carpentier, Patrick D. Ashmore, Piya Shedden, Sam Lutfi, Charles George, Christoph Schwanke, Greg, Lehel Kovacs, Bd_Tmprd ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow ---------- Sources: https://doi.org/10.1126/sciadv.aaw6671 https://doi.org/10.1126/science.aap7714 https://doi.org/10.1038/ng.3198 https://doi.org/10.1016/j.neubiorev.2008.05.023 https://doi.org/10.1038/4351177a https://doi.org/10.1080/07420520500545854 https://doi.org/10.1016/j.cbpa.2010.11.029’ https://doi.org/10.1007/s00360-012-0652-0 https://doi.org/10.1111/j.1365-2028.1973.tb00070.x https://doi.org/10.1002/biof.1549 https://www.ncbi.nlm.nih.gov/pubmed/23181222 https://doi.org/10.1007/978-0-387-72347-1_5 https://doi.org/10.1016/j.freeradbiomed.2019.03.036 Image Sources: https://www.istockphoto.com/photo/finless-porpoise-gm1163097456-319258024 https://www.istockphoto.com/photo/humpback-whales-and-calf-gm502967006-82051483 https://www.istockphoto.com/photo/posing-playful-dolphin-gm1161287868-318156504 https://www.istockphoto.com/photo/the-tail-of-the-humpback-whale-gm683115146-125419869 https://www.istockphoto.com/photo/close-up-of-dolphin-in-water-with-its-mouth-open-gm157396697-7914949 https://www.istockphoto.com/photo/two-asian-students-studying-but-one-has-fallen-asleep-gm117145400-15726789 https://www.istockphoto.com/photo/dolphin-mother-with-baby-gm182754739-13165908 https://www.istockphoto.com/photo/blood-clot-cell-artery-gm139399372-529518 https://www.istockphoto.com/photo/humpback-whales-bubble-net-feeding-gm963087572-263048255 https://www.istockphoto.com/photo/sperm-whale-gm1032493108-276544324 https://www.istockphoto.com/photo/pesticide-treatment-gm473298428-64700125 https://commons.wikimedia.org/wiki/File:Runoff_of_soil_%26_fertilizer.jpg


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