The avocado is highly regarded by many people as delicious and nutritious, but the most extraordinary thing about avocados may be their very existence. [SciShow]

Your brain does a lot to smooth out your visual experience of the world… including the closest thing we have to time travel. [SciShow]

This this video, Bill “The Engineer Guy” demonstrates the temperature-dependent shape memory of nitinol metal. He explains how “twinning” in the crystal structure of nitinol produces the memory effect. He shows a nitinol-based engine that is powered by temperature differences. He closes the video with a description of superelasticity, a phenomenon related to the memory […]

Apollo 11 launched on July 16, 1969, carrying Neil Armstrong, Buzz Aldrin, and Michael Collins on a journey to pull off humankind’s first moon landing. The eight-day journey was made possible by the careful deconstruction of the Saturn V rocket and Apollo spacecraft, and made use of a technique of docking components of the spacecraft […]

Dragonflies can catch prey with near perfect accuracy, the best among all predators. But how does something with so few neurons achieve such prowess? Neuroscientist Greg Gage and his colleagues explore how a dragonfly unerringly locks onto its preys and captures it within milliseconds using just sensors and a fake fly. [TED]

This video is about the original cold fusion: μ muon-catalyzed cold fusion of deuterium, tritium, hydrogen, into helium-3 and helium 4. The problems with it are the half-life of muons and the sticking of muons to alpha particles. Also involved are neutrons, protons, break-even, etc. This has nothing to do with fusion by capture in […]

The earliest time measurements were observations of cycles of the natural world, using patterns of changes from day to night and season to season to build calendars. More precise time-keeping eventually came along to put time in more convenient boxes. But what exactly are we measuring? Andrew Zimmerman Jones contemplates whether time is something that […]

From SciShow: In the comments of our episode debunking six popular home remedies, a lot of you asked us if there are any that do work. Well, here’s the answer! [SciShow]