Challenges Quote by Barack Obama

Global warming is not only the number one environmental challenge we face today, but one of the most important issues facing all of humanity...…

— Leonardo DiCaprio

Climate change is the world's greatest environmental challenge. It is now plain that the emission of greenhouse gases, associated with industrialization and economic growth...is…

— Tony Blair

Thousands of climate scientists agree that global warming is not only the most threatening environmental problem but also one of the greatest challenges facing…

— Leonardo DiCaprio

Global climate change is one of the greatest challenges facing humanity in the twenty-first century.

— Angela Merkel

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

— Hu Jintao

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

— Linda Thomas-Greenfield

Global warming may be a 'crisis,' even 'the most pressing environmental problem of our time.' ... Indeed, it may ultimately affect nearly everyone on…

— John Roberts

The fight against global warming is a humanitarian issue - how the planet can be preserved - and it is also an issue of…

— Francois Hollande

Nothing is as daunting as the threats associated with global warming. That's the biggie. Everyone bangs on about rising sea levels but the real…

— Tim Winton

The climate crisis is the greatest challenge humanity has ever faced. From not only the warming of the earth with higher global temperatures, but…

— Al Gore

We're taking climate change seriously. But it's not the only environmental issue that we face as a planet.

— Andrew R. Wheeler

Climate change is a global problem. The planet is warming because of the growing level of greenhouse gas emissions from human activity. If this…

— Malcolm Turnbull