We can choose food that doesn't lead to illnesses like diabetes and cancer. We can choose food that doesn't contribute to water pollution and climate change. And we can choose food that keeps local economies vibrant and farmers on their land.

The single most important thing we can do to protect our communities from climate change is to reduce dangerous carbon pollution.

When climate change supercharges weather patterns, the disadvantaged often suffer first and most.

I have long understood that climate change is not only an environmental issue - it is a humanitarian, economic, health, and justice issue as well.

The Keystone XL pipeline is a threat to our nation. It would increase pollution and intensify climate change for generations to come. We must raise our voices and demand our leaders reject this dirty scheme.

Carbon pollution contributes to climate change, which causes temperatures to rise. Hotter temperatures mean more smog in the air, and breathing smog can inflame deep lung tissue. Repeated inflammation over time can permanently scar lung tissue, even in low concentrations.