An engine is the power source for many types of vehicles and machines, and there are many cool-looking pieces that make it work. But how do they all work together? We asked NASA aerospace engineer Erik Axdahl to help us find the answer.Got a question that really fuels your curiosity? Send it to us at BrainsOn.org/contact, and we’ll work to find the answer! 

Frogs love snacking on flies. The frog’s sticky tongue shoots out – quick as a flash! – grabs the fly and pulls it into its mouth. But what about other animals? Do they like eating flies too? We asked Johns Hopkins graduate student Abel Corver to help us find the answer.Got a question that’s buzzing around in your brain? Send it to us at BrainsOn.org/contact and we’ll find an answer that satis-flies your curiosity!

A-choo! Does being outside on a sunny day ever make you sneeze? You’re not alone! But what causes these sunshine sneeze attacks? We asked scientist Dr. Kira Bacal to help us find the answer. Got a question that you’re a-chooing on? Send it to us at BrainsOn.org/contact, and we’ll find an answer that’ll blow your mind.

Quick, how many pasta shapes can you name?! Spaghetti, rigatoni, tortellini, macaroni, penne, bucatini…whew! There are a plethora of pastas to choose from. But have you ever thought about why this simple food comes in so many shapes? We asked pasta shape inventor Dan Pashman to give us the dish. Got a question that’s pastatively confounding? Send it to us at BrainsOn.org/contact, and we’ll serve up the answer.

Have you ever seen a willow tree? They sometimes have long branches that hang down to the ground and make them look like green, leafy waterfalls.  But why do they have this unusual shape?  We asked botanist Brandi Cannon-Force  to help us find the answer.Got a question that you just can’t find the answer to?  Don’t weep! Send it to us at BrainsOn.org/contact, and we’ll root around for the answer.