Change Quote by M. K. Stalin

Climate change is the biggest governing challenge we face. It's the biggest governing challenge I think we've ever faced.

— Chris Hayes

Climate change is probably the greatest long-term challenge facing the human race

— Tony Blair

The truth is that climate change is presenting the greatest challenge humanity has ever faced.

— Al Gore

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 a challenge for all of us all over the globe.

— Linda Thomas-Greenfield

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

— Ed Davey

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

I'm no longer sceptical. I no longer have any doubt at all. I think climate change is the major challenge facing the world.

— David Attenborough

Climate change is the greatest threat of our time.

— Gina McCarthy

Few challenges facing America and the world are more urgent than combating climate change. The science is beyond dispute and the facts are clear.

— Barack Obama

Climate change is a humongous challenge but it also presents numerous economic opportunities.

— Clive Lewis

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

— William Hague