Must Read -- Carl Zimmer on Making an Old Butterfly Again

Carl Zimmer at The Loom has a simply must read post on three species of butterflies. Scientists believed that one species might be a hybrid of the other two, so they set out to test it by making the species all over again.

This is really important stuff because it goes against a common argument vs. evolution -- that it cannot be witnessed in action. Experiments like these show that it is plausible and that it occurs on human-relevant time scales.