This episode is brought to you by the Music for Scientists album! Stream the album on major music services here: https://streamlink.to/music-for-scientists. Check out “Aristarchus in the Rain” here: https://www.youtube.com/watch?v=kuD61YDmv6U Have you ever wondered why 75% humidity in the summer feels sticky, but 75% humidity in the winter feels super dry? Turns out, the common definition of humidity is inconvenient and confusing. But there is a better way! Hosted by: Michael Aranda 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: Silas Emrys, Drew Hart, Jeffrey Mckishen, James Knight, Christoph Schwanke, Jacob, Matt Curls, Christopher R Boucher, Eric Jensen, Adam Brainard, Nazara, Growing Violet, Ash, Laura Sanborn, Sam Lutfi, Piya Shedden, Katie Marie Magnone, Scott Satovsky Jr, charles george, Alex Hackman, Chris Peters, Kevin Bealer, Alisa Sherbow ---------- 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.washingtonpost.com/news/capital-weather-gang/wp/2017/07/12/stop-telling-us-to-use-percent-humidity-its-terrible-and-heres-why/ http://voices.washingtonpost.com/capitalweathergang/2009/06/reader_mail_use_of_the_dewpoin.html?itid=lk_inline_manual_14 https://www.weather.gov/lmk/humidity https://howthingsfly.si.edu/ask-an-explainer/how-it-warm-air-able-hold-more-water-vapour-cold-air https://www.researchgate.net/profile/G_Korotcenkov/publication/331375659_Handbooks-Vol-2-Chapter-3-Mechanical_Hygrometerpdf/data/5c7687a192851c695045381f/Handbooks-Vol-2-Chapter-3-Mechanical-Hygrometer.pdf Image Sources: https://commons.wikimedia.org/wiki/File:Hair_hygrometer-MHS_106-P5200227-gradient.jpg https://commons.wikimedia.org/wiki/File:Dewpoint-RH.svg