NPR News

From the outside, this white metal container looks like all the other mobile structures at Forward Operating Base Shank, the main NATO base in Afghanistan's Logar province. But rather than housing soldiers, offices or latrines, the building contains a fully functioning — if spartan — radio studio.

Every time a storm brings flooding to a large metropolitan area, there are calls to improve the levee systems that are designed to prevent flooding.

But there's a major problem with doing that. "We don't know where all of our levees are," says Samantha Medlock with the Association of State Floodplain Managers.

Superstorm Sandy capped what's been a pretty impressive couple of years for U.S. natural disasters. There have been wildfires, tornadoes, floods and derechos. And insurance companies are on the hook to pay billions in related claims.

"We're seeing more of everything, and what we're doing is trying to factor that in going forward as we work with others to have a better sense of what the future holds," says State Farm spokesman David Beigie.

The news for patients who had injections of fungus-tainted steroids just keeps getting worse.

Both campaigns want to claim momentum heading into the final days of the campaign. This is especially true in battleground states like Iowa, where enthusiasm and voter turnout can make all the difference.

It's a common political metaphor — momentum — but is it a good one?