We all know that the Tyrannosaurus rex was a gigantic and vicious dinosaur. PBS Eons explores why the killer dino evolved in the way that it did, and why it never lost its silly little dangly arms before going extinct.
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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!)
People often use the terms 4-wheel drive and all-wheel drive interchangeably, but that’s just wrong. The Team O’Neil Rally School explains how the two types of drivetrains differ. Proper 4x4s might be better at off-roading, but modern AWD systems are typically more versatile.
If you’ve ever wondered why so many areas of land are considered federal property here in the good old U.S. of A., you’ll want to tune into CGP Grey’s video, which provides a great lesson on how land went from being doled out for free to being closely held by the government.
For all of our efforts to explore space – and maybe someday colonize other planets – humans have been creating lots of space junk, which will make it harder to leave the Earth over time. Kurzgesagt explores the dangers of filling up the low Earth orbit with stuff.
Techmoan looks at the history of the DataPlay, a tiny optical disc format. Launched in 2001, it could carry up to 500MB of data in a disc just a tad bigger than a dollar coin. Unfortunately, its reliance on other companies and non-rewritable nature spelled doom for the disc.
Despite successes like Windows and Xbox, Microsoft has had its share of failures too. Business Casual looks back at how Microsoft threw billions at the mobile device market, and had a solid product, but still couldn’t keep it going against the iOS and Android juggernauts.
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