We're vulnerable to begin with, and climate change exacerbates the vulnerability.

It indicates that the reliability of the river will decrease with climate change. And that model doesn't take into account population growth and the ensuing increase in demand. We can't do business as usual.

The measurements show long-term trends. Glaciers react to climate change, and warmer temperatures in the Alps are reflected in the results.

If we let climate change run its course, this could be a fairly typical winter 30 or 40 years from now.

The hurricanes we are seeing are indeed a direct result of climate change and it's no longer something we'll see in the future, it's happening now.

The committee has held hearings on climate change issues for nearly 30 years. The first one was in 1978 when I was still on staff. It's time to act.