Around the world, there are lakes that disappear without warning. Then, even stranger, they come back! This can happen for lots of different reasons, and the fact that they vanish and reappear reveals some surprising connections. Hosted by: Hank Green SciShow has a spinoff podcast! It's called SciShow Tangents. Check it out at www.scishowtangents.org ---------- Support SciShow by becoming a patron on Patreon: www.patreon.com/scishow ---------- Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone forever: Eric Jensen, Matt Curls, Sam Buck, Christopher R Boucher, Avi Yashchin, Adam Brainard, Greg, Alex Hackman, Sam Lutfi, D.A. Noe, Piya Shedden, Scott Satovsky Jr, Charles Southerland, Patrick D. Ashmore, charles george, Kevin Bealer, Chris Peters ---------- Looking for SciShow elsewhere on the internet? Facebook: www.facebook.com/scishow Twitter: www.twitter.com/scishow Tumblr: scishow.tumblr.com Instagram: instagram.com/thescishow ---------- Sources: www.atlasobscura.com/places/lost-lake www.opb.org/news/article/oregon-lost-lake-hole-explained/ www.livescience.com/50749-lost-lake-lava-tube.html phys.org/news/2012-05-chile-patagonian-lake.html pubs.usgs.gov/sim/3332/pdf/SIM3332.pdf www.antarcticglaciers.org/glacier-processes/glacial-lakes/glacial-lake-outburst-floods/ energyeducation.ca/encyclopedia/Glacial_lake_outburst_flood floridadep.gov/rcp/aquatic-preserve/locations/lake-jackson-aquatic-preserve www.tallahassee.com/story/life/home-garden/2017/10/19/water-level-fluctuations-natural-cycle-lake-jackson/778157001/ www.tallahassee.com/story/life/home-garden/2017/09/21/what-makes-lake-jackson-drain-so-quickly/689812001/ www.tallahassee.com/story/life/home-garden/2017/04/06/lake-jackson-rises-back-normal-levels/100137946/ www.lakejacksonturtles.org/ www.landandwater.com/features/vol46no5/vol46no5_1.html www.tallahassee.com/story/news/local/2015/05/06/lake-jacksons-revival-continues/70926030/ Images: www.istockphoto.com/photo/mt-hood-oregon-gm184851675-18187257 en.wikipedia.org/wiki/File:Close-up_of_a_skylight_on_coastal_plain,_with_lava_stalactites_forming_on_the_roof_of_the_tube.jpg commons.wikimedia.org/wiki/File:Clear_Lake_with_Mount_Washington.jpg pubs.usgs.gov/sim/3332/pdf/SIM3332.pdf commons.wikimedia.org/wiki/File:LkJacksonFLAbt2000.JPG commons.wikimedia.org/wiki/File:Lake_Jackson_sunrise.jpg

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