Isn't the only hope for the planet that the industrialized civilizations collapse? Isn't it our responsibility to bring this about?
Those who are already feeling the effects of climate change don't have time to deny it - they're busy dealing with it.
A low-carbon, clean energy economy can be an engine of growth for decades to come.
Global warming is not only the number one environmental challenge we face today, but one of the most important issues facing all of humanity... We all have to do our part to raise awareness about global warming and the problems we as a people face in promoting a sustainable environmental future for our planet.
It's important for me to have hope because that's my job as a parent, to have hope, for my kids, that we're not going to leave them in a world that's in shambles, that's a chaotic place, that's a dangerous place.
And yes, my plan will continue to reduce the carbon pollution that is heating our planet - because climate change is not a hoax. More droughts and floods and wildfires are not a joke. They're a threat to our children's future. And in this election, you can do something about it.
Reality is that which, when you stop believing in it, doesn't go away.
I think the environment should be put in the category of our national security. Defense of our resources is just as important as defense abroad. Otherwise what is there to defend?
You are here to enable the divine purpose of the Universe to unfold. That is how important you are!
The good news is, we have everything we need now to respond to the challenge of global warming. We have all the technologies we need, more are being developed.... But we should not wait, we cannot wait, we must not wait.
Sticking your head in the sand might make you feel safer, but it’s not going to protect you from the coming storm.
I don't have much patience for anyone who denies that this challenge is real.
We have to all shoulder the responsibility for keeping the planet habitable, or we're going to suffer the consequences - together.
Our planet is changing in ways that will have profound impacts on all of humankind.
That bright blue ball rising over the moon's surface, containing everything we hold dear - the laughter of children, a quiet sunset, all the hopes and dreams of posterity - that's what's at stake. That's what we're fighting for. And if we remember that, I'm absolutely sure we'll succeed.
While we may not live to see the full realization of our ambition, we will have the satisfaction of knowing that the world we leave to our children will be better off for what we did.
Those of us in positions of responsibility, we'll need to be less concerned with the judgment of special interests and well-connected donors, and more concerned with the judgment of posterity.
As the world's largest economy and second-largest carbon emitter, as a country with unsurpassed ability to drive innovation and scientific breakthroughs, as the country that people around the world continue to look to in times of crisis, we've got a vital role to play. We can't stand on the sidelines. We've got a unique responsibility.
The hard truth is carbon pollution has built up in our atmosphere for decades now. And even if we Americans do our part, the planet will slowly keep warming for some time to come.
If the world is to be healed through human efforts, I am convinced it will be by ordinary people, people whose love for this life is even greater than their fear. People who can open to the web of life that called us into being
In order to stabilize world population, we must eliminate 350,000 per day.
Our world faces a true planetary emergency. I know the phrase sounds shrill, and I know it's a challenge to the moral imagination.
Mr Howard's problem is for so long he's been a climate change sceptic, how can he, therefore, put himself to the country as part of a climate change solution for the future.
Global warming can mean colder, it can mean drier, it can mean wetter.
It ain't what you don't know that gets you into trouble. It's what you know for sure that just ain't so.
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