Clean air and a healthy climate benefit all of us, but it will take a diverse coalition to step up to the threat posed by unchecked climate change.

I believe everyone deserves access to clean air and water, and that climate change has exacerbated this challenge.

I'm a monomaniac with one goal: clean air from clean energy.

Placing limits on carbon pollution from power plants is about ensuring that we have clean air to breathe and communities that are safe to live in. Carbon pollution limits are about defending families who have borne the heaviest burden of the main pollutant that is driving climate change.

This still commits us to quite a bit of climate change, but it leaves the door open to avoiding the largest and most devastating consequences.

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.