Climate change is happening, humans are causing it, and I…

The jury is still out on whether humans are causing climate change.

— Sonny Perdue

Climate change isn't just an environmental issue; it's a technology, water, food, energy, population issue. None of this happens in a vacuum.

— David Titley

On almost every environmental issue I care about, in fact, I've been wrong at one point or another. I used to think that climate…

— Ramez Naam

Climate change is an economic, public health, and environmental issue that we have a moral responsibility to address.

— Brad Schneider

I think that the environmental movement is wisely moving away from a largely emotion-based argument for the spiritual or intrinsic value of Nature with…

— Edward Norton

I think the environmental impact of this disaster is likely to have been very, very modest.

— Tony Hayward

I think the environmental movement is the biggest people's movement in the world. Unfortunately, our governments and corporations haven't responded accordingly to protect our…

— Leonardo DiCaprio

The most important environmental issue is one that is rarely mentioned, and that is the lack of a conservation ethic in our culture.

— Gaylord Nelson

I think the environmental movement is now so large and diverse that it's hard to talk of it as a single entity.

— Ramez Naam

I do think environmental writers need to be forward thinking, not just lamenting our losses. We do need to lament; in some ways it's…

— Alison Hawthorne Deming

I think the environmental problem will be the number one item on the agenda of the 21st century... This is a problem that cannot…

— Mikhail Gorbachev

Today when the public thinks of the products of science it is likely to think about environmental problems, an unproductive armament industry, careless or…

— Leo Kadanoff

I do think that if people are taking the time to think about their environmental footprint when it comes to how many flights they…

— Caroline Lucas

I think we are very environmental people. We need to be supported environmentally. Books very much have that imprint on the mind.

— Sakyong Mipham

I have come to believe that extracting natural gas from shale using the newish technique called hydrofracking is the environmental issue of our time.…

— Sandra Steingraber