Why do cows burp methane?
rcwebberWhy do cows burp methane? -Silas, 10, Seattle, WA
Dear Silas,
There are more than a billion cows on our planet and they all need to burp. Just like us, they burp to get rid of extra gas in their stomachs. » More …
Are we growing every second?
rcwebberDear Dr. Universe: Is it possible that we are growing every second? – David, 9, Camas, Wash.
Dear David,
When I was a kitten, I used to keep track of my growth. Every now and then, I’d make a little pencil mark on the wall right above my ears. » More …
Why do animals hibernate?
rcwebberDear Dr. Universe: Why do animals hibernate? -Jarrett T., 10, Edinburgh, IN
Dear Jarrett,
Animals can get through winter in all kinds of ways. Us cats like to curl up on a cozy couch. Some penguins huddle in groups to create heat. A lot of birds fly south to warmer weather. Perhaps you put on mittens and a coat. » More …
How do we digest?
rcwebberDear Dr. Universe: How does digestion work? -Abi, 12, U.S., Megha R., 11, Dubai
Dear Abi and Megha,
All around the world, animals are eating all kinds of different foods. Our foods might be different, but one thing is true for all of us: We have to digest. » More …
Why do we get scared?
rcwebberDear Dr. Universe: Why do we find some things scary? -Jack H., 8, UK
Dear Jack,
While our fears might be different, we all get scared sometimes. Vacuums, dogs, and even cucumbers make my hair stand on end. Perhaps for you it’s spiders, the dark, or the thought of monsters under your bed.
My friend Michael Delahoyde is really curious about what freaks us out. As an English professor at Washington State University, he’s even taught a course about monsters. » More …
How do we remember stuff?
rcwebberDear Dr. Universe: How do we remember stuff? -Aidan, 11, Franklin, Indiana
Dear Aidan,
Our brains have an incredible ability to help us remember all kinds of stuff. Of course, memory isn’t perfect. Sometimes we forget our homework or where we left our favorite cat toy. » More …
The sound of a seashell
rcwebber
Why do we hear the sea in a seashell? -Steve, Minnewaska School, Minnesota
Dear Steve,
Whenever us cats go to the beach, we tend to keep a safe distance from the water and like to explore the shore. I once stumbled upon a big, beautiful pink and white seashell. » More …
Pain: Why do we feel it?
rcwebber
Why do we feel pain? -Sara, 11, Moscow, Idaho
Dear Sara,
Pain is unpleasant, but we need it for survival. Just the other day I was out exploring when I stubbed my paw and let out a big meow. My nervous system was doing its job. » More …
How many colors can we see?
rcwebberHow many colors can we see? -Andrew P., 12
Dear Andrew,
The human eye can see millions and millions of colors. But believe it or not, some colors exist in our world that the human eye can’t see. » More …
Eyes: Two, one, lots, none
rcwebber
Are there creatures on Earth with one eye? -Elena, 7, Vancouver, Canada
Dear Elena,
The animal kingdom is full of amazing eyes. And yes, there are actually creatures on our planet that have just one. » More …