Even though there are 365 days in a year there’s a 50% chance that two people in a group of 23 will share the same birthday. Increase the number of people to 75 and there’s nearly a 100% chance of a match. How can that be? Kevin of Vsauce2 explains the math.
No, Kurzgesagt’s latest video isn’t about building a fancy vacuum cleaner. Instead, it’s an explanation of how we might go about creating a megastructure in space, capable of harnessing the power of a star, by containing it. Basically, it would be the largest task every undertaken.
How to Make Everything is trying to make a printed t-shirt from scratch. Amazed at the difficulty of the endeavor, he decided to look into why clothes are so cheap these days. A combination of industrialization, necessity and global reach led to the rise of fast fashion.
When you think about how cheese is made, it sounds kind of gross. But we still love the gooey, stinky stuff, and gobble it up with fervor. TED-Ed’s Paul Kindstedt looks back at the earliest beginnings of this delectable dairy product, roughly 10,000 years ago.
TED-Ed shares a head-scratcher that you can solve, even with brute force thinking. You need to build a time travel machine by forming a triangle of one of two colors. But you have no way of knowing which color will appear when you connect the time travel dots.
The “normal” human body temperature is around 98.6ºF. So shouldn’t air that’s at around that temperature feel neutral? SciShow explains why air that’s that warm feels hot. Our skin is actually a few degrees cooler our body temp, and our body is constantly generating heat.
(PG-13: Language) “What do I want a way outta here for?” Lessons from the Screenplay uses Good Will Hunting to demonstrate how writing fictional characters can sometimes be writing about psychology. Characters have traumas that need to be overcome before they change.
From falling, to avalanches, to hypothermia, to extreme altitude sickness, there are many ways to die ascending Mt. Everest. Wendover Productions offers a look at some of the many things expeditions put in place to help improve climbers’ chances of survival.
These days, we all spend countless hours staring at digital screens, from smartphones, to tablets, to televisions, to computers. But is the notion that looking at these backlit devices can permanently harm your eyesight a myth or reality? SciShow provides their brief take.
There have been numerous recorded instances of groups of people losing their minds at the same time. The always informative, and usually gross Sam O’ Nella Academy shares some of the more notable cases of the bizarre behavior known as mass psychogenic illness.
Stanford mathematician Tadashi Tokieda explains a strange phenonmenon which occurs when tapping the inside of a coffee mug with a spoon – as it creates differently-pitched tones depending on where you place the spoon. More from Quanta Magazine. (Thanks Susan!)