Our big, beautiful sky stretches all the way from the ground beneath our feet to about sixty miles above the Earth. It’s made up of countless air molecules, pinging around like tiny, invisible pinballs. And even though we can’t feel the weight of each individual air molecule, all together they weigh a lot! But how much does the sky actually weigh? (spoiler a ... Show More
Jul 14
Why are brains so squishy?
Our brains are amazing machines, but they are also very delicate. We have to wear helmets when we bike, skate, or do other activities where we might bang our skulls. Why is the brain so sensitive? Turns out, it’s a soft blob a lot like tofu, but that softness lets it do some pret ... Show More
34 m
Apr 2021
How heavy are the clouds?
The clouds we see in the sky seem rather light, almost like absorbent cotton. However, being filled with water and ice, these gigantic suspended masses weigh - in reality - up to several tons. Don't be fooled by appearances, the clouds that float above your heads are more like an ... Show More
2m 13s
Aug 2022
How is Cloud Watching Helpful for Science?
While we all love to do a bit of cloud watching, have you ever thought about the science behind clouds? There is so much more to clouds than just fun animal shapes and rain. Take a listen to the fascinating chat with Jessica Taylor, physical scientist, at NASA's Langley Research ... Show More
37m 30s
