anatomy

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I found this on the beach in St. Augustine, Florida. The sand grains should give you an idea of size. What is it?

431

I was recently sick, with a headache, sore throat, and a fever. Why do we get fevers?

Bird Bones

One of the important ways that we learn about anatomy is by dissection. The word "dissection: may make you think of dead frogs in bottles of preservative, but you probably dissect things frequently. You just don't think of it as dissection. Instead, you think of it as dinner.

958

upside down photo
For the past two days, I have been suffering from vertigo, trying to get my body to remember which way is up. What causes vertigo?

971

goat
Goats have unusual eyes with a wide, rectangular pupil. What other animals have that kind of pupil?

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