SciShow: Some Mammals Can Just… Pause Pregnancy

Teacher or professor: SciShow
Subject: Science
Content of the Lesson: SciShow is supported by Brilliant.org. Go to https://Brilliant.org/SciShow to get 20% off of an annual Premium subscription. We generally think of pregnancy as a continuous process, but scientists have recently discovered mechanisms that allow for certain mammals to put the development of a fetus on pause. 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, D.A. Noe, Charles Southerland, Eric Jensen, Christopher R Boucher, Alex Hackman, Matt Curls, Adam Brainard, Jeffrey McKishen, Scott Satovsky Jr, Sam Buck, Ron Kakar, Chris Peters, Kevin Carpentier, Patrick D. Ashmore, Piya Shedden, Sam Lutfi, Charles George, Christoph Schwanke, Greg ---------- 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://www.ncbi.nlm.nih.gov/pmc/articles/PMC3777570/ https://www.ncbi.nlm.nih.gov/pubmed/25023682 https://dev.biologists.org/content/144/18/3199 https://www.eurekalert.org/pub_releases/2020-02/uowh-hsm021020.php https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3848826/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6164496/ https://www.mayoclinic.org/tests-procedures/in-vitro-fertilization/multimedia/blastocyst/img-20008646 https://www.ucsfhealth.org/education/conception-how-it-works#4 https://www.cancer.gov/publications/dictionaries/cancer-terms/def/signaling-pathway https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0033027https://www.pnas.org/content/114/45/11818 https://www.cell.com/developmental-cell/fulltext/S1534-5807(19)31067-6?_returnURL=https%3A%2F%2Flinkinghub.elsevier.com%2Fretrieve%2Fpii%2FS1534580719310676%3Fshowall%3Dtrue Image Sources: https://www.istockphoto.com/photo/a-house-mouse-foraging-on-birdseed-gm1183387238-332711280 https://www.istockphoto.com/photo/male-southern-elephant-seal-with-pup-gm1190842842-337724493 https://www.istockphoto.com/photo/wolverine-walking-in-snow-gm157421572-8712176 https://www.istockphoto.com/photo/tammar-wallaby-gm184154519-16968637 https://commons.wikimedia.org/wiki/File:Protein_FRAP1_PDB_1aue.png CCBYSA: Emw https://www.istockphoto.com/photo/glouton-wolverine-gm969363836-264208371 https://www.istockphoto.com/photo/a-wild-brown-house-mouse-mus-musculus-perched-on-a-pile-of-pine-cones-gm1095074164-293935237 https://www.istockphoto.com/photo/cape-ground-squirrel-xerus-inauris-standing-against-white-background-gm626214764-110487089 https://www.istockphoto.com/vector/human-organ-uterus-flat-icon-vector-illustration-gm1158911743-316736306 https://www.istockphoto.com/vector/stages-of-fetal-development-gm985678164-267411128 https://www.istockphoto.com/vector/obstetrics-clinic-flat-line-icons-set-abortion-protest-baby-ultrasound-embryo-fetus-gm1162118829-318646901


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