Are we women more likely to date an attractive, smart, creative guy or an attractive-but-dumb guy who can't strum a guitar and has never even attempted to write bad poetry?
Population scientist Lori Hunter talks about some of the broad impacts of the HIV epidemic in South Africa, including a possibly unsustainable reliance on local resources.
Alex deSherbinin of Columbia University talks about the potential impacts of climate change on humans. Scientists believe climate change may force people in environmentally stressed regions to migrate.
Honey bees in the United States are in drastic decline. EarthSky spoke to bee breeder Susan Cobey of the University of California Davis about building a better bee.
Every year, millions of people migrate from one country or continent to another. Joel Cohen uses mathematical models to map patterns in human migration.