America Quote by Barack Obama

I do not underestimate the difficulty of the challenge that global climate change presents to us. It will take a significant effort and the…

— Federico Pena

Climate change is real. The science is compelling. And the longer we wait, the harder the problem will be to solve.

— Anonymous

Climate change is, over the longer term, our greatest national security challenge. We have to do all we can to slow it down and…

— Wesley K. Wark

We face a climate crisis now that is the most serious challenge our civilization has ever confronted. And the greatest country in the world…

— Al Gore

Climate change is a complex challenge, and one that will not be easily solved.

— Ed Davey

Global climate change has a profound impact on the survival and development of mankind. It is a major challenge facing all countries.

— Hu Jintao

The scientific evidence is now overwhelming: climate change presents very serious global risks, and it demands an urgent global response

— Nicholas Stern

We have to face the reality of climate change. It is arguably the biggest threat we are facing today.

— William Hague

...the world needs to face up to the challenge of climate change, and to do so now. It is clear that climate change poses…

— Gordon Brown

Climate change is a challenge for all of us all over the globe.

— Linda Thomas-Greenfield

The climate crisis is upon us, and its effects will only become more apparent in the years to come. We need to both adapt…

— Ned Lamont