This image was recently captured by the high resolution imaging science experiment (HiRISE) on NASA’s Mars Reconnaissance Orbiter, and yes, it does look like a very specific insignia most of us geeks know and love. From Hirise: These curious chevron shapes in southeast Hellas Planitia are the result of a complex story of dunes, lava, […]

Optical illusions are images that seem to trick our minds into seeing something different from what they actually are. But how do they work? Nathan S. Jacobs walks us through a few common optical illusions and explains what these tricks of the eye can tell us about how our brains assemble visual information into the […]

The world is getting closer to achieving one of the most important public health goals of our time: eradicating HIV. And to do this, we won’t even have to cure the disease. We simply have to stop HIV from being transmitted until eventually it fizzles out. Philip A. Chan explores the preventive strategies helping us […]

Can’t fall asleep? These sleep tips are better than ASMR! [ASAP Science]

Over the last few years eating meat has increasingly been associated with health risks, like heart disease, cancer and an early death. How unhealthy is meat really? Find out in this episode of “In a Nutshell.” [Kurzgesagt – In a Nutshell]

This is a demonstration of the conservation of angular momentum using a Hoberman sphere, a plastic sphere frame that can be contracted by pulling on a string. Pulling on the string while the sphere is rotating causes the sphere’s moment of inertia to decrease and its angular speed to increase, demonstrating conservation of angular momentum. […]