Even though doctors have been using general anesthesia for nearly 200 years, they haven’t really understood the details of how it temporarily shuts down your brain — until now. [SciShow]

From Minute Physics: This video is about how masks (whether surgical, or N95, or cloth) are counterintuitive and actually work much better epidemiologically than one might expect. Masks do double-duty, and the fraction of interactions with masks is much higher than the fraction of people wearing masks, so partially adopted, partially effective masks are able […]

From Kurtis Baute: If you set up a row of dominoes as a timeline of history from the Big Bang to now, and had each domino represent 1 million years it would stretch over 300 meters long. I know because thats what I did for this video. The universe is very old. [Kurtis Baute | […]

In this video, “The Action Lab” takes a look at some strange shapes that, even though they should not roll, they actually do. He then proceeds in explaining the science and physics of what makes things roll. For those interested in purchasing these strange toys, Amazon has them right here. Please note that Geeks are […]

Takeoff and flight sequences of insects spanning 8 different taxonomic orders captured at 3,200 fps! 01:17 – plume moth 01:20 – firefly 02:32 – painted lichen moth 03:14 – leafroller moth 03:31 – rosy maple moth 04:00 – stonefly (see comment for correct ID) 05:14 – mayflies 06:07 – fishfly 07:00 – aphid 07:42 – […]

For most of the year, the Gulf of Mexico is teeming with marine life, from tiny crustaceans to massive whales. But every summer, disaster strikes. Around May, animals begin to flee the area. And soon, creatures that can’t swim or can’t swim fast enough begin to suffocate and die off in massive numbers. What’s going […]

Getting rare materials from the ground into your phone is ugly. The mining industry is responsible for air and water pollution and the destruction of entire landscapes. But what if we could replace the mining industry on Earth with a clean process that can’t harm anyone? Well, we can. All we need to do is […]

There’s a lot of confusion about tear gases—what they are, what they do, and whether they can cause long-term harm. Here’s what we know. [SciShow]