Today you’ll learn about how scientists are developing a form of birth control for men, why humans need more sleep during the winter, and how whales are giving up singing their love songs in favor of fighting for mates.Male Contraceptive  “Sperm-Slowing Male Contraceptive Reversibly Inhibits Mouse Fertility” by Ruairi J Mackenziehttps://www.technologynetworks.com/drug-discovery/news/sperm-slowing-male-contraceptive-reversibly-inhibits-mouse-fertility-370207“On-demand male contraception via acute inhibition of soluble adenylyl cyclase” by Melanie Balbach et al.https://www.nature.com/articles/s41467-023-36119-6Winter Snooze“Humans ‘may need more sleep in winter’, study finds” by Jane Clintonhttps://www.theguardian.com/lifeandstyle/2023/feb/17/humans-may-need-more-sleep-in-winter-study-finds“Seasonality of human sleep: Polysomnographic data of a neuropsychiatric sleep clinic” by Aileen Seidler et al.https://www.frontiersin.org/articles/10.3389/fnins.2023.1105233/full“Feeling tired? Humans may need more sleep during the winter, new study suggests” by Wyatte Grantham-Philipshttps://www.usatoday.com/story/news/health/2023/02/21/more-sleep-needed-winter-study/11280016002/“Humans need more sleep in the winter” by Alison Bosmanhttps://www.earth.com/news/humans-need-more-sleep-in-the-winter-season/Whale Fight Songs“Whales give up singing to fight for love” by UNIVERSITY OF QUEENSLANDhttps://www.eurekalert.org/news-releases/979939“Post-whaling shift in mating tactics in male humpback whales” by Rebecca Dunlop & Celine Frerehttps://www.nature.com/articles/s42003-023-04509-7“Global whaling peaked in the 1960s” by Hannah Richiehttps://ourworldindata.org/whaling#:~:text=At%20its%20peak%20in%20the,to%20manage%20international%20whaling%20stocks.Follow Curiosity Daily on your favorite podcast app to get smarter with Calli and Nate — for free! Still curious? Get exclusive science shows, nature documentaries, and more real-life entertainment on discovery+! Go to https://discoveryplus.com/curiosity to start your 7-day free trial. discovery+ is currently only available for US subscribers.Find episode transcripts here: https://curiosity-daily-4e53644e.simplecast.com/episodes/male-contraceptive-winter-snooze-whale-fight-songs Hosted on Acast. See acast.com/privacy for more information.