If (gasp!) the subject is too big for a Whyfile, hit the books. Here, we review four great science books, on evolution, environment, fighting nature, and discovering motherly love.
A report that people were in Texas 15,500 years ago settles a long dispute: The Americans who made Clovis-style spear-points were not the first Americans — despite heavy archeological skepticism. Pre-Clovis rules! But who were the pre-Clovis people, and why are scientists so dismissive of contrary evidence? More