Dear Emma,
For most of human history, people have enjoyed chocolate in a spicy, bitter drink. But when people discovered how to turn chocolate into a solid, it opened up a whole new world of possibilities.
That’s what I found out from my friend Omar Cornejo, a scientist at Washington State University who is very curious about the history and life of the cacao tree. Chocolate comes from the seeds of leathery fruits that grow on the tree.
If we cut open the fruit, we would find about 20 to 60 seeds on the inside. In ancient times, people would grind up the seeds … » More …
Read More ...Dear Daniel,
Our brains work hard to help us move, talk and think. They also help us sleep. When we rest, some parts of our brain are active. When we are up and moving around, parts of our brain are actually at rest.
Read More ...Dear Sophia,
There are quite a few foods that are sweet and good to eat. A lot of them are fruit, said my friend Pablo Monsivais. He’s an associate professor at the Washington State University Elson S. Floyd College of Medicine.
Read More ...Dear Zack,
You aren’t alone if you’ve ever heard someone at the dinner table say, “you’ve got to eat your broccoli.” Broccoli is one of nature’s superfoods, so it’s no wonder we are often encouraged to eat those little green trees.
Read More ...Dear Jose,
We live in a world filled with all kinds of smells. Take off a pair of tennis shoes after a long day and you might even get a whiff of something pretty stinky. You can blame it on your bacteria. Millions of these tiny things live on your feet.
Read More ...Dear Sarah,
At this very moment, several quarts of blood are circulating through your body at nearly 4 mph. But as you’ve pointed out, not everyone’s blood is the same.
Your question made me wonder exactly what we mean when we talk about blood types. I decided to ask my friend Amber Fyfe-Johnson, a researcher at Washington State University who studies cardiovascular diseases--diseases of the blood vessels-- in kids.
Read More ...Dear Bushra,
Our ancestors weren’t very picky eaters. In fact, they ate pretty much whatever they could find, wherever and whenever they could find it.
Read More ...Dear Rhemi,
Astronauts eat all kinds of different foods up in space. The food is often similar to what we have here on Earth. But in space, there's very little gravity. There’s very limited refrigeration, too. On the International Space Station, the refrigerator is only about half the size of a microwave. That means scientists who prepare and package astronaut food have to do it in ways that take up very little room and don’t need to be kept cold.
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