Assuming Quote by David Luiz

The US is responsible for 25 percent of the world's greenhouse gas emissions. It should take responsibility for leading the way.

— Tony Juniper

Now, as the world's largest economy and as the world's second largest emitter, America bears our responsibility to address climate change, and we intend…

— Barack Obama

I honestly don't know, but if America continues to refuse to reduce its greenhouse gas emissions, I see a bleak future not only for…

— Peter Singer

Greenhouse gas pollution, through its contribution to global climate change, presents a significant threat to Americans health and to the environment upon which our…

— Gina McCarthy

We don't know what's causing climate change on this planet. And the idea of spending trillions and trillions of dollars to try to reduce…

— Mitt Romney

We are faced with an incredible challenge to curb our greenhouse-gas emissions around the globe. Everyone has to realize this and come to terms…

— Albert II, Prince of Monaco

How are we going to know what impact that has on the greenhouse gas emissions? How are we going to hold everybody accountable for…

— Christy Clark

We run enormous risks and we know what kind of reductions of greenhouse gases are necessary to drastically reduce risks. Reducing emissions by half…

— Nicholas Stern

I think all countries need to aim to cut the CO2 emissions per person, taking account of externalities like imports and exports.

— Martin Rees

“over the past decade Congress has not passed a single bill that takes direct aim at climate change. Yet at the same time, the…

— Michael R. Bloomberg

My view is that we don't know what's causing climate change on this planet. And the idea of spending trillions and trillions of dollars…

— Mitt Romney

While the leading environmental alarmists burn fossil fuels like they're going out of style, the United States under President Trump has led the world…

— Michael J. Knowles