Can frog babies hear their mothers croaking underwater? -Ella, 9, Seattle, WA
Baby frogs go through some pretty big changes to become grown-up frogs. They start out as tiny tadpoles with just a head and a tail to help them swim. They have an inner ear and can hear some sounds. » More …
Dr. Universe: Is the puffin a descendent of the dodo?
-Samykutha, Chennai, India
The dodo bird isn’t with us anymore, but if you visit a city park you’ll likely see one of its very close relatives walking around. It might even be nibbling on a French fry. Dodos were a pigeon, said my friend Michael Webster. » More …
Can you grow stuff like thread, cloth, silk, and most importantly, clothing? -Jay, Colorado
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.
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