In the decade since the storm, the federal government's involvement in disaster relief has risen -- and so have tensions with localities.

Republicans may have a supermajority in the legislature, but they can't seem to win statewide offices.

Can rewarding doctors for taking risks lead to better outcomes and cheaper costs?

Even before Obama released his rules to reduce greenhouse gas emissions, dozens of cities pledged to become carbon-neutral. But how they will achieve that isn't always known.

Not that long ago, we hardly ever used or even knew the term. What changed?