Most people don’t know why, but smaller animals need to eat more (relative to their bodyweight) to survive. This phenomemon is called “Kleiber’s Law.” According to this law, an animal’s metabolic rate scales to the 3⁄4 power of the animal’s mass. With this in mind, a hobbit, which is about half the mass of a […]
The Artemis missions will build a community on the Moon, driving a new lunar economy and inspiring a new generation. Narrator Drew Barrymore and NASA team members explain why returning to the Moon is the natural next step in human exploration, and how the lessons learned from Artemis will pave the way to Mars and […]
Trauma surgeon Annie Onishi answers the internet’s burning questions about surgery. How come it doesn’t seem like people bleed that much during surgery? Why do they cut off your clothing in the ER? Can an electric eel act like a defibrillator? Annie answers all these questions and much more! [Wired]
Every year more than 1,000 tons of plastic rains down onto national parks and wilderness in the western U.S. Where does that plastic come from? And is it also in rain that falls on Washington, DC? [Reactions]
In the 20th century, most vaccines took over a decade to research, test, and produce. But the vaccines for COVID-19 were cleared for emergency use in less than 11 months. The secret behind this speed is a medical technology that’s been developing for decades: the mRNA vaccine. So how do these revolutionary vaccines work? Kaitlyn […]
Check out this compilation of amazing footage from the winners of the Nikon Small World In Motion 2021 competition! Nikon’s Small World in Motion encompasses any movie or digital time-lapse photography taken through the microscope. [Nikon Instruments Inc. | Via Neatorama]
Several COVID-19 variants are acting uniquely enough to qualify as a distinct strain. And you might have heard about one on the news: the Delta variant. Today we’re going to talk about what it is, why it’s here, and what you need to know about it. [SciShow]
The human immune system is the most complex biological system we know, after the human brain, and yet, most of us never learn how it works. Or what it is. Your immune System consists of hundreds of tiny and two large organs, it has its own transport network spread throughout your body. Every day it […]
Have you ever wondered why 75% humidity in the summer feels sticky, but 75% humidity in the winter feels super dry? Turns out, the common definition of humidity is inconvenient and confusing. But there is a better way! Find out in this episode of SciShow! [SciShow]
The largest things in the universe are black holes. In contrast to things like planets or stars they have no physical size limit, and can literally grow endlessly. Although in reality specific things need to happen to create different kinds of black holes, from really tiny ones to the largest single things in the universe. […]