A world first. New footage from Mars rendered in stunning 4K resolution. We also talk about the cameras on board the Martian rovers and how we made the video. The cameras on board the rovers were the height of technology when the respective missions launched. [ElderFox Documentaries]

A short segment of Carl Sagan’s Cosmos show that talk about how Eratosthenes (276 BC – 194 BC), a greek mathematician, geographer, poet, and astronomer, discovered that the Earth was round using simple observations. He then goes to prove that the Earth is round using a simple piece of cardboard. [carlsagandotcom]

Irish doctor Maitiu O Tuathail was sick and tired of hearing people claiming that masks can lower your oxygen level, so he decided to do something about it. He hooked himself up to an oxygen monitoring machine and then wore 6 masks one on top of the others. Watch. Gets some of our amazingly geeky […]

Some people who get sick with COVID-19 don’t feel any symptoms of the disease, but what does an asymptomatic COVID-19 infection look like? Find out in this episode of SciShow! [SciShow]

Two sisters take the same DNA test. The results show that one sister is 10% French, the other 0%. Both sisters share the same two parents, and therefore the same set of ancestors. So how can one be 10% more French than the other? Tests like these rely on our DNA to answer questions about […]

Watch as chemical engineer makes what he calls “Hydrophobic Dry Slime.” The substance is made by mixing regular slime with fumed silica. [The Action Lab] Please note that Geeks are Sexy might get a small commission from qualifying purchases done through our posts (as an Amazon associate or a member of other affiliate programs.)

We see it everywhere on the web, people arguing that wearing face masks in public is useless. Truth is, it’s more about protecting others than yourself by restricting the air flow that comes out of various air holes. Here’s a video of Bill Nye on why you should wear a mask and a visual proof […]

From Mental Floss: Fart facts are like farts themselves: incredibly varied, potentially inconvenient, and not something you want to make a mistake with. Erin (@erincmccarthy) discusses the history of farts, from tasty Tudor-era cuisine to scientific research into the volume of a fart (you’ll have to watch the video to find out whether or not […]