New evidence suggests some fossils as the oldest known sign of life on Earth, and scientists may have a way to speed up the process of carbon neutralization in the ocean! Hosted by: Hank Green ---------- Support SciShow by becoming a patron on Patreon: www.patreon.com/scishow ---------- Dooblydoo thanks go to the following Patreon supporters—Alexander Wadsworth, Kevin Bealer, Mark Terrio-Cameron, KatieMarie Magnone, Patrick Merrithew, Charles Southerland, Fatima Iqbal, Sultan Alkhulaifi, Tim Curwick, Scott Satovsky Jr, Philippe von Bergen, Bella Nash, Chris Peters, Patrick D. Ashmore, Piya Shedden, Charles George ---------- 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: Oldest life on Earth? www.nature.com/nature/journal/vaop/ncurrent/full/nature23261.html?foxtrotcallback=true www.nature.com/nature/journal/v543/n7643/full/nature21377.html?foxtrotcallback=true#author-information news.nationalgeographic.com/2017/03/oldest-life-earth-iron-fossils-canada-vents-science/ www.sciencemag.org/news/2016/08/hints-oldest-fossil-life-found-greenland-rocks Blue carbon storage www.pnas.org/content/early/2017/07/17/1703604114.abstract www.eurekalert.org/pub_releases/2017-07/uosc-dbc071717.php phys.org/news/2017-07-key-carbon-sequestration.html Images: commons.wikimedia.org/wiki/File:Stromatolithe_Pal%C3%A9oarch%C3%A9en_-_MNHT.PAL.2009.10.1.jpg commons.wikimedia.org/wiki/File:WOA05_GLODAP_pi_DIC_AYool.png commons.wikimedia.org/wiki/File:WOA05_GLODAP_pd_DIC_AYool.png commons.wikimedia.org/wiki/File:Clouds_over_the_Atlantic_Ocean.jpg