Climate change is undoubtedly an economic threat--that is true; a national security threat--that is true; and, ultimately, and most importantly, an existential threat.

The last thing we would want for the generations to follow... is to hear in some of your remarks actual fear and anxiety being expressed.

If left unabated, climate change will displace world populations.

It makes a difference. It will make a difference, and, by the way, it is bipartisan and based on science.

As Mr. Kinzinger said a few minutes ago, contrary to popular belief, the United States--the United States--is the country that has led the world in greenhouse gas reductions.

For every ton of carbon dioxide reduced by the United States, China adds nearly four times as much.

I agree that we need to take aggressive action. I agree that we need to ensure that we move forward in a sustainable, rational manner.

There must be leadership in addressing climate change because we, and especially your generation, cannot afford for things not to change.

America knows how to lead in a crisis, and it is high time we pick ourselves up and get back to this fight.

So far, our generation has failed to adequately address our climate crisis. This failure is not fatal, yet our failure to change will be.

I strongly criticized the Trump Administration's decision to withdraw from the Paris Climate Agreement not only because it ignored overwhelming scientific evidence but also because it has undermined our credibility on the world stage and…