Did Vikings Use These Crystals To Navigate?
AdultsHistoryTechnologyThe Vikings were renowned navigators at a time before magnetic compasses were invented. So how'd they manage it? Their secret may have been these pretty-pointed crystals of calcite called Iceland spar, and this month's SciShow Rocks Box subscribers will get to try this out for themselves!
Solar Energy Is Even Cheaper Than You Think | Jenny Chase | TED
AdultsLifeNatureTechnologyHow prevalent is solar power, really? According to researcher Jenny Chase, it's already displacing fossil fuels in key energy markets around the world.
Animal ASMR: Slow Down With Sloths
KidsAnimalsEntertainmentKids 110Kids 115Kids 120Kids 125Kids 130MindfulnessNatureLet the sounds of the Brazilian rainforest soothe you as this female three-toed sloth slowly navigates the trees that surround her.
The Free Will Illusion
AdultsPhilosophyPsychologyYou feel like you are free. Free to cross the street when you want to, free to like the color blue more than red, free to watch this video.
It Is (Not) Perfect
ChildrenBooksCreativityECEE1EE2FriendshipReadingWhen two fuzzy creatures build a sandcastle on the beach, they agree that it’s pretty much perfect. But then two new friends show up—and they see some room for improvement