Yes, tetrapods were the first member of our phylum (chordate) to walk on land, but who were the firs
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See AllWe started the book talking about how the Big Bang might not have been such a Bang after all. In chapter 12 we introduced Pythagoras an his theorems, especially his understanding of "the music of the
In chapter two, we trace the beginnings of the Animal Kingdom in a Tree of Life. Almost all animals on earth derive from a single branch of that tree--except a few, including comb jelly and sponges. N
Sixty Minutes had an interesting story last night about researchers who used fMRI techniques to measure brain activity of people who responded "heroically" in crisis situations. Turns out they tend to