What do airplanes, power plants, ships, and explosions have in common? They all make clouds! We're conducting a survey of our viewers! If you have time, please give us feedback: www.surveymonkey.com/r/SciShowSurvey2017 Hosted by: Olivia Gordon ---------- Support SciShow by becoming a patron on Patreon: www.patreon.com/scishow ---------- Dooblydoo thanks go to the following Patreon supporters: Kelly Landrum Jones, Sam Lutfi, Kevin Knupp, Nicholas Smith, Inerri, D.A. Noe, alexander wadsworth, سلطان الخليفي, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Bella Nash, Charles Southerland, Bader AlGhamdi, James Harshaw, Patrick Merrithew, Patrick D. Ashmore, Candy, Tim Curwick, charles george, Saul, Mark Terrio-Cameron, Viraansh Bhanushali, Kevin Bealer, Philippe von Bergen, Chris Peters, Justin Lentz ---------- 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.nasa.gov/sites/default/files/atoms/files/contrails_k-12.pdf science-edu.larc.nasa.gov/contrail-edu/science.php science-edu.larc.nasa.gov/contrail-edu/resources-activities-appleman_student.php www.faa.gov/regulations_policies/policy_guidance/envir_policy/media/contrails.pdf science-edu.larc.nasa.gov/contrail-edu/history.php earthobservatory.nasa.gov/IOTD/view.php?id=81061&eocn=image&eoci=related_image earthobservatory.nasa.gov/IOTD/view.php?id=77345&eocn=image&eoci=related_image earthobservatory.nasa.gov/Features/Pollution/ www.wmocloudatlas.org/homogenitus.html www.wmocloudatlas.org/homogenitus.html www.skybrary.aero/index.php/Pyrocumulus www.nasa.gov/press-release/nasa-study-confirms-biofuels-reduce-jet-engine-pollution Images: commons.wikimedia.org/wiki/File:A340-313X.jpg commons.wikimedia.org/wiki/File:Contrails_over_Nova_Scotia.jpeg commons.wikimedia.org/wiki/File:ShipTracks.jpg commons.wikimedia.org/wiki/File:Belchatow-elektrownia.jpg commons.wikimedia.org/wiki/File:Mushroom_cloud.svg commons.wikimedia.org/wiki/File:BusterJangle-Charlie.jpg