We take the temperature of the Democratic party. Also: a look at what Senator Obama can learn from Colorado’s Democratic governor, Bill Ritter, who’s presiding over the left-leaning political transformation of his state. Holly Heston, daughter of Charlton Heston, talks about growing up with Moses and Ben Hur for a dad. Find out why fossils found in Oregon suggest humans lived there earlier than had been previously thought. And on Underreported: do termite guts hold a solution to global warming?