Skip to main content Skip to navigation
Ask Dr. Universe Plants, Animals, and Bugs

I saw a caterpillar and a butterfly in the neighbor's yard. So my question is, what exactly happens inside the little sack they're in while they transform into a butterfly and HOW exactly do they do it?  -Eston

Dear Eston,

Springtime sets the stage for one of the greatest transformations in the natural world.

“It’s the construction of a butterfly or moth from caterpillar soup,” said my friend David James, an entomologist at Washington State University. James studies the science behind metamorphosis, or how a creature transforms.

Read More ...

Why are ripe fruits sweet and why is it so important?  -Alexa, Schenzhen, China

Dear Alexa,

My friend Kate Evans said the answer really depends on whether you want the perspective of a person, a plant, or even a cat. Evans is a plant scientist at Washington State University in Wenatchee, where she investigates fruit in the Apple Capital of the World.

She explained how long ago, wild apples actually grew in forests. Without farmers around to plant them in orchards, trees had to scatter their own seeds to survive.

For some trees, the key to survival is growing sweet, ripe fruit.

Read More ...

Can you grow stuff like thread, cloth, silk, and most importantly, clothing? -Jay, Colorado

v
Dear Jay,

We can use all kinds of animal, bug, and plant materials to make cloth. Even some of the tiniest living things on the planet can make cloth, too.

I heard about this from my friend Hang Liu, a Washington State University professor who studies the science of materials we use and wear every day.

Read More ...

Do bats have habits? -Elliot 

Dear Elliot,

You are onto something. Quick, to the bat-lab! That’s where I met up with my friend Christine Portfors, a scientist at Washington State University who studies fruit bats.

Portfors explained that while bats don’t quite have habits like humans, they do have behaviors.

Bats are nocturnal. They sleep during the day and wake up in the early evening. The first thing they’ll do when they wake up is fly around and around their caves for a while.

Read More ...