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DNA: Extract it!

What is Dr. Universe’s favorite experiment? -Garrett, 8th grade, Eastern Washington

Dear Garrett,

You know, your question reminds me of a couple other science questions from curious readers. Evangeline, age 7, wants to know why her hair is black. Sureya, age 8, wants to know why some people have curly hair.

It just so happens that one of my favorite science projects explores our questions about what makes us unique. It has to do with our DNA, or the blueprint for life. » More …

Boogers: What are they?

What are boogers? -Taryn, 9, Seattle, WA

 

What exactly is a booger and is it harmful to eat? -Concerned grandpa

 

Dear curious readers,

When I went to visit my friend Susan Perkins, an instructor of nursing at Washington State University, she shined a tiny light in my nose. Sure enough, she found some crusty little boogies. » More …

Why is yawning contagious?

Why is yawning contagious? -Grant, 10, Pullman, WA

Dear Grant,

When I got your question, I met up with my friend Hans Van Dongen, a scientist at Washington State University in Spokane. He works in a research lab where they study sleep. As a cat who appreciates naps, it’s one of my favorite places to visit. » More …