Today we bring the mic onto the L and talk all about trains — how they go, where they go, how big they are, what color they are, and who takes them. Also we talk about the best animals. Brought to you by: train tracks.

Thanks to Kickstarter backer Whit Gladfelter for the support!

We sit around the breakfast table and talk about the difference between babies and kids, how slingshots work, what would happen if people had wings, the magic store, and three-legged animals. Brought to you by breakfast.

Thanks to Hiro and Grammy for backing our show.

Join Ezra on his walk to school on the first day of first grade. We wonder how much a school weighs, the most important things to learn in school, where daddy went to school, and why some cars are parked on the curb. Brought to you by First Grade, naturally.

Thanks to Veronica for this week's question!

Recorded on location at the Morton Arboretum. We talk about hedge mazes, cutting down trees, fairies, the cost of ice cream, and thanks to Alison, where we would go, if we could go anywhere in the world.

Thanks to backers Alison Headley for the question and Tom Dyke for the rhyme inspiration.

Eleanor asks about the most afraid we've ever been. We consider what it'd be like to have a giraffe for a pet, talk about our pet caterpillar, the difference between boy and girl names, and how trains roll down the track. Brought to you by chocolate popsicles.

Thanks to Eleanor for the question and to Cat for backing the show.

Our first Kickstarter-supported episode! We cover a lot of robot stuff, like how they survive (thanks Martin!), how they walk, and some good jobs they could do. We also learn about the mythical land of Coolbaba. Brought to you by camping.

Thanks to Martin & Lionel for this week's question, and to Aleister for lending us his name to rhyme.

The Weiszes travel to Kentucky and learn all about creeks, caves, stalag…things, barbeques, and the Earth's magnetic field. Brought to you by, naturally, Kentucky.

Apologies for the imbalanced audio on this episode. It was our first attempt to use the new mic — and we're totally experts yet. Hopefully things will be much better next episode.

Our 30th episode! We cover trees and why they blow in the wind, the last day of Kindergarten, ice cream socials, what we'd name a lizard, how chairs work, and how to talk without talking. Brought to you by a playdate with Sofia.

Please back us on Kickstarter! Even for a $1 — every little bit helps spread the word.

We discuss sword fighting, how wheels move, why bodies move, pokey pins, Candyland in Mexico, hinges, simple machines, very high numbers, and whether we'd chose to be able to fly or be invisible.