Happy Bloggiversary!

Darren Naish started Tetrapod Zoology a year ago. As a systematist, he does everything systematically, including the analysis of his own year in blogging:

Volume I
Volume II

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This isn't much - really it is part of another post I am working on. The point of this post is to calculate the density of this piece of wood.
A recently published study seems to indicate t
Just what the world needs, right?
Pretty much every high school student can quote the formula for the area of a circle: it's A = pi r^2, where r is the radius. Most of them can do the same thing for the volume of a sphere: V = 4/3 pi r^3.