Moneyball for HIV

Bjorn Lomborg’s middle name is not actually “controversial,” but maybe it should be. The Danish economist—and TIME 100 selection—gained notoriety for books like The Skeptical Environmentalist and Cool It that called into question the basic green assumptions that the world is getting worse and that climate change is an existential threat to the human race. In recent years [...]

Health: Did Cities Help HIV Take Off?

In this week’s Science, researchers led by Michael Worobey of the University of Arizona and Preston Marx of the Tulane National Primate Research Center looked at the history of simian immunodeficiency virus (SIV)—the primate precursor to HIV—and found that the disease may be thousands of years older than scientists originally suspected. The new study estimates [...]