VideoSift shares an educational 5.75 minutes TEDEducation YouTube video showing "Sex Determination: More Complicated Than You Thought -- From something as small and complex as a chromosome to something as seemingly simple as the weather, sex determination systems vary significantly across the animal kingdom.
Deafness in Disguise shows the "concealed hearing devices of the 19th and 20th centuries" with details, marketings, images, timeline, books, etc.
WarThinkTank's YouTube channel shares an one hour, 27 minutes, and 24 seconds YouTube video showing History Channel's documentary titled "Weird Warfare" -- "... An in-depth look is taken into history's most bizarre weapons of war, such as pigeon-guided missiles, an aircraft carrier made of ice, trained poisonous mosquitoes, incendiary bats, a plan to alter Hitler's gender and much more."
VideoSift shares a funny four minutes and 26 seconds YouTube video spoof/parody of MythBusters titled "Zombie Bite Myth" -- "Can you get turned into a zombie from just one bite? Aaron, Matt, and Kandi use science to find out in this episode of Myth Punchers."
There is also another episode titled "Time Travel Myth"
KQED QUEST has a bunch of videos that "explore science, nature, and environment stories from Northern California and beyond..."