In 1971 during the Apollo 15 mission, astronaut David Scott re-created Galileo’s famous experiment on the moon by dropping a hammer and a feather simultaneously. As you’ll see, both fell at the same rate due to the lack of air resistance! Watch above!

In this collection of classic MinuteEarth videos, we answer the question “why are you the way that you are?” 0:10 – Which Fish Did We Evolve From? 1:31 – Are We Really 99% Chimp?. 4:26 – Why Are Snakes So Creepy? 6:12 – How Long Can We Live? [MinuteEarth]

Update: Don’t you guys think it’s a little weird that just before the first stage rocket comes back down on the landing pad at T+00:09:20, the camera cuts off, and then when it goes live again, the rocket is there? Could it be the disruption of the signal by the rocket that’s coming down? Watch […]

A new virus emerges and spreads like wildfire. In order to contain it, researchers must first collect data about who’s been infected. Two main viral testing techniques are critical: one tells you if you have the virus and the other shows if you’ve already had it. So, how exactly do these tests work? Cella Wright […]

From The Action Lab: In this video I show you what happens when you put a fan in a vacuum chamber. This video has been requested many times and I have never done it before. [The Action Lab]

For almost a decade, scientists chased the source of a deadly new virus through China’s tallest mountains and most isolated caverns. They finally found it in the bats of Shitou Cave. The virus in question was a coronavirus that caused an epidemic of severe acute respiratory syndrome, or SARS, in 2003. So what exactly is […]