Where do carrot seeds come from?
Carrots are a delicious, crunchy snack. But unlike other vegetables, carrots don’t have seeds inside. So how do farmers grow them? We asked plant scientist Jeff Mitchell to help us get to the root of...
23 Helmi 20246min
Why is air invisible?
Air – we can’t breathe without it, we can’t live without it, we know it’s made up of molecules, so why is it invisible? Chemist Vicky van der Geer-Bock will help us answer this question. If there’s a ...
22 Helmi 20245min
Do cockroaches have hearts?
Our hearts are strong muscles that pump blood all through our bodies. But do hearts look the same in different animals? What about a tiger, or a lizard, or…a cockroach? Do cockroaches even have hearts...
21 Helmi 20245min
How do shoelaces come untied?
Have you ever been walking around when you notice that your shoelaces have come untied, even though you just tied them? What’s up with that? We asked engineer Christine Gregg to help us understand. S...
20 Helmi 20245min
Why are some people lactose intolerant?
Say cheese! But if you’re lactose intolerant maybe don’t eat it? Cuz any kind of milk based food will probably give you a tummy-ache! But why? We asked pediatrician Dr. Anjuli Gans why some people are...
19 Helmi 20246min
How many germs could we see without a microscope?
There are so many bacteria in the world that we still haven’t discovered them all! But because bacteria are so tiny, they’re really only visible with the help of a microscope. But what if lots and lot...
16 Helmi 20245min
Why do crickets chirp?
The sound of crickets on a warm summer evening is just so soothing, isn’t it? All those little insects in the grass, talking to each other about… well, we don’t really know! In fact, we don’t know why...
15 Helmi 20244min
What would happen if you took a party balloon to space?
Have you ever accidentally let go of a helium balloon and watched it float up … up … and away? It drifts way up in the sky until it’s just a tiny speck! But what would happen if a balloon made it all ...
14 Helmi 20245min
