Al Gore
Al Gore

There are many who would much prefer that the word 'climate' never be mentioned and that the issue be eliminated from our national conversation.

Alan Lowenthal
Alan Lowenthal

Those who deny human-caused climate change offer no compelling evidence to better explain the undeniable rise in atmospheric concentrations of greenhouse gases and global temperature.

Alan Lowenthal
Alan Lowenthal

Human-caused climate change threatens almost every aspect of human existence.

Alex Berenson
Alex Berenson

Climate change might be disastrous, but does that mean we want carbon taxes that raise the price of a gallon of heating oil to $10? And how exactly will those taxes affect economic growth?

Alex Honnold
Alex Honnold

The simple facts of Chadian life - what it takes to survive in that kind of climate with nothing but a hut and some animals - stunned me. And this made me realize, perhaps for the first time, how easy my life was compared to those of people in less privileged societies.

Alex Shoumatoff
Alex Shoumatoff

The mammoth was basically done in by climate change. The last ones survived on Wrangel Island, north of Chukotka, until 3,700 years ago. According to Eveny mythology, mammoths scooped up dirt with their tusks to form the first dry land.

Alex Shoumatoff
Alex Shoumatoff

The global climate is a complex interactive system, with all kinds of nonlinear feedback loops.

Alex Steffen
Alex Steffen

Make no mistake: Tackling climate change is vital. But to see everything through the lens of short-term CO2 reductions, letting our obsession with carbon blind us to the bigger picture, is to court catastrophe.

Alex Steffen
Alex Steffen

There's no really rosy scenario ahead, where climate change just doesn't happen, but I believe we don't have the ethical right to throw our hands up in the air and say, 'Game over.' Whatever pathway we choose, our descendants will be dealing with that reality for centuries to come.

Alex Steffen
Alex Steffen

In tough times, some of us see protecting the climate as a luxury, but that's an outdated 20th-century worldview from a time when we thought industrialization was the end goal, waste was growth, and wealth meant a thick haze of air pollution.