Ancient dinosaurs were some of the biggest creatures to ever stomp the Earth. But how and why did they get so giant? Was there more food to help them grow? Was the planet itself somehow different, allowing them to reach epic proportions? In this episode we talk to dino-experts Femke Holwerda and Brian Switek…

In this episode we ponder some big questions from Brains On listeners about the vastness of space.

Your body is making and using electricity all the time — but how do we do it? We’ll take a look at how bioelectricity helps our brain sends signals and our hearts pump blood. And we’ll learn about some amazing animals that use electricity in weird and wild ways.

Batteries are everywhere — they’re in our phones, our computers, our cars, our toys. But how do they work? To find out, we talk to a scientist who’s making really big batteries to store renewable energy, another who’s working on really small ones to power our phones, and we play in a park with a dog.

We use electricity all the time, but where exactly does it come from? How does it get to our homes? It’s a fascinating journey that can start hundreds of miles from your outlet.

What makes your hair stand on end? Why does your skirt stick your tights? Why do you get zapped by electric shocks when you go to touch a doorknob?