Are You Afraid of Holes?
Honeycomb. Strawberries. Flower pods. Some people find these things incredibly scary. We call this extreme fear trypophobia. But why does it exist?
Honeycomb. Strawberries. Flower pods. Some people find these things incredibly scary. We call this extreme fear trypophobia. But why does it exist?
I went to NASA in Houston to talk to astronaut Don Pettit.
Why is ice slippery? It's a more complicated answer than it seems!
Recycling is broken. Here's how we can fix it.