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Why does meat brown on the grill?

Why does meat get brown on the grill?

– Christina, Seattle, Wash.

Dear Christina,

You know summer is just around the corner when the smell of barbecue is in the air. It’s a great question you ask and it leads us to the Meats Lab at Washington State University. That’s where I met up with my friend and animal scientist, Jan Busboom. » More …

Why are plants green?

Dear Dr. Universe: Why are plants green?

– Nadia, 8, Australia

Dear Nadia,

A lush tropical rainforest, a field of sunflowers, a garden in your neighborhood. Our Earth is home to all kinds of plant life. From trees to catnip, there are thousands of different species of plants. Most of these plants are green, but not all of them.
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Science for Breakfast: Is there iron in cereal?

Why is there iron in my cereal? Is there iron in other food? -Phillip, 11, Pullman, WA

Dear Phillip,

Iron is found in buildings and skyscrapers. It makes up most of the Earth’s core. It’s even found in the Sun and stars. And yes, it’s also in a bowl of cereal. » 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 …

How do mollusks move around the ocean?

If mollusks have such heavy shells to drag around with them, how have they spread all over the ocean? -Michel W.

Dear Michel,

Mollusks, from land snails and slugs to oysters and mussels in the sea, have a few things in common. They have a head. They have a soft middle part that holds their organs. Then, some have a muscle that’s known as a “foot.” » More …

How do I have a bake sale?

Dr. Universe,

How do you have a bake sale?

-Aoife, 7, Omagh, Ireland

Dear Aoife,

It took more than a hundred bakers to pull off the biggest bake sale in history. They made 14,534 cakes, sold out their supply in eight hours, and made it into the Guinness World Records. » More …