Martin Kaste

"Rolling Stone" magazine has published more pictures taken by U.S. soldiers in Afghanistan. They show American troops posing with dead Afghans, among other disturbing images. NPR's Martin Kaste reports the photos are connected to ongoing court martial cases of soldiers at Joint Base Lewis-McChord in Washington state.

Part 1 of a two-part series on the impact of Canadian oil in the U.S.

The oil sands of Alberta, Canada, constitute one of the biggest proven oil reserves in the world. Today, Canada is the single biggest foreign source of oil for the U.S., and industry analysts project that 20 years from now, it may be supplying one-fourth of all U.S. oil needs.

But getting all that oil across the border requires heavy-duty infrastructure, and some new projects are causing cross-border tensions.

The Megaloads In Montana

Japan's nuclear crisis has dampened enthusiasm in the U.S. for nuclear power as an alternative to greenhouse gas power sources such as coal. Fears are especially acute along the earthquake-prone West Coast. But advocates of nuclear power say those fears are misplaced because newer reactor designs are less vulnerable to a meltdown — even if they're abandoned in an emergency.