Bird eggs come in all shapes and sizes, from speckled hummingbird eggs smaller than a jellybean to mango-sized emu eggs. But how do birds make them? We asked bird expert Paul Bartell to help us find the answer.

Got a question that’s ova-whelming? Send it to us at BrainsOn.org/contact, and we’ll help crack the case!

Have you ever screamed when you saw a spider in the house? First of all, don’t be scared, that spider isn’t looking for you. But second of all, did you wonder if the spider even heard you? Most of us haven’t gotten close enough to a spider to see if it has any ears at all. We asked spider expert Paul Shamble to explain how spiders hear. 

If you’ve got a question about spiders or anything else, send it to us at BrainsOn.org/contact and we’ll do our best to find the answer.

Oobleck is a mix of cornstarch and water that can act like a solid or a liquid. On its own, it’s gloopy and squishy, but if you squeeze it, it turns into a solid ball in your hand! So what would happen if oobleck fell from the sky like rain?  We asked meteorologist Ginger Zee to help us find the answer.

Got a question that’s clouding your mind? Send it to us at BrainsOn.org/contact, and we’ll bRAINstorm an answer!

We’ve all seen cartoon images of a mousetrap loaded with a big wedge of delicious cheese, but is that what mice actually like to eat? Maybe they like spaghetti, or tacos, or chocolate pudding. We asked veterinarian Kate Pritchett-Cornett what we should serve next time we’re having a family of mice over for dinner. 

Got another cheesy question for us? Send it to us at BrainsOn.org/contact and we’ll try to do a gouda job of answering it.

Paper is made out of trees! But… how? Those tall, leafy, shade-giving beauties in your backyard don’t look anything like the piece of white paper coming out of your computer printer. We asked forest expert and educator Sanford Smith to help us find the answer.

Got a question printed on the inside of your brain? Send it to us at Brainson.org/contact, and we’ll help you uncrumple the answer!

About 60 miles above Earth is a line where our atmosphere ends and space begins.  That boundary is called the Karman line.  Of course, rockets that astronauts take go much farther than that.  But just how far from earth have astronauts gone?  And what do they need to bring for the trip?!  We asked spacesuit designer Pablo de Leon to help us find the answer!

Got a question that’s far out? Send it to us at BrainsOn.org/contact, and we’ll shoot for the moon to find the answer.

Even though fish can be very small, it’s obvious that they have mouths. But what’s inside that mouth? Tiny teeth? A little tongue? A uvula hangy ball at the back of their throat? Tierney Thys, a marine biologist and National Geographic explorer, helps us understand at least one element of a fish’s mouth - whether they have tongues! 

Got a burning Moment of Um question that you just can’t lick? Send it to us at BrainsOn.org/contact, and we’ll help you get a taste for knowledge!

At first glance, you might think bats and birds are close relatives. After all, they both flap their wings and fly! But are they actually close cousins or just coincidental copycats? We asked bird expert Amanda Bender to help us find the answer.

Got a question that’s got you in a flap? Send it to us at BrainsOn.org/contact, and we’ll help find an answer–we promise we won’t just wing it! 

We already know that bats are amazing creatures. They are the only mammals that can fly. The bones in their wings resemble our fingers. They account for about one in five of all mammals living on the planet. And some can fly up to 99 miles per hour! But have you ever asked yourself why the heck they sleep upside down? We asked biologist DeeAnn Reeder to help us find the answer.

Got a Moment of Um question that’s turning you upside down? Send it to us at BrainsOn.org/contact, and we’ll help get it all sorted out.

Cinnamon is used all over the world. It makes cookies, cakes, tea, and coffee taste and smell amazing, and it’s also used in lots of savory foods!But where does cinnamon come from…before it gets to the grocery store? We asked spice expert Pooja Bag to help us find the answer.

Got a question that’s flavoring your thoughts? Send it to us at BrainsOn.org/contact, and we’ll bark up every tree until we find the answer!

Bacteria are everywhere. At the top of Mount Everest. At the bottom of the Pacific Ocean. There are millions on your hands and TRILLIONS in your gut! So what happens when a truck rolls over bacteria on the road? Do they get squished? We asked microbiology professor Daniel Bond to help us find the answer.

Got a crushing question? Send it to us at BrainsOn.org/contact, and we’ll keep on truckin’ til we find an answer!