What are gravitational waves? - Amber L. Stuver
AdultsPhysicsScienceSpaceIn September 2015, scientists witnessed something never seen before: two black holes colliding. Both about 30 times as big as our Sun, they had been orbiting each other for millions of years. A fraction of a second before the crash, they sent a vibration across the universe at the speed of light that was picked up by the LIGO detector. So what are these ripples in space? Amber L. Stuver explains.
The Egyptian and Hittite Peace Treaty | Lost Treasures of Egypt
AdultsHistoryHumanPoliticsWhile Ramses II is often hailed for his military achievements and his skill as a warrior, he was also a well versed diplomat. During his reign he brought the 20 year war with the Hittites to an end and created one of the first written peace treaties.
Why is this 2,500 year old shipwreck so well-preserved?
AdultsConstructionHistoryScienceDiscover the unique conditions that make the Black Sea host to dozens of shipwrecks that date back thousands of years.
Can YOU Fix Climate Change?
AdultsEnvironmentHumanLifeGlobal WarmingThis video was supported by Gates Notes, the personal blog of Bill Gates, where he writes about global health, climate change, and more.
How to Photograph the Night Sky | National Geographic
AdultsCreativityEducationHumanPhotographyScienceNASCAR driver and photography enthusiast, Bubba Wallace, and National Geographic Photographer Babak Tafreshi demonstrate how to take nighttime photos of the sky. Paid Content for Columbia.
You could have a secret twin (but not the way you think) - Kayla Mandel Sheets
AdultsBiologyHumanScienceGeneticsHealthFamilyWhile searching for a kidney donor, Karen Keegan stumbled upon a mystery. After undergoing genetic testing, it turned out that some of her cells had a completely different set of genes from the others.