The evidence for human-made climate change is overwhelming.
I think you could offer seven or eight different possible ends for energy policy. Climate change is one of them. Dealing with criteria pollutants is one of those related to that.
Research shows that the climate of an organization influences an individual's contribution far more than the individual himself.
Many climate change deniers would have you believe that addressing climate change is all pain and no gain. This is simply not true. We can tackle this challenge while improving our personal health and the health of our economy. These are not competing interests; they go hand in hand.
In many places in the developed world, we eat or waste probably twice as many food calories as we really need. We're wasteful of food. We ship all over the world. We're now realizing that generating the energy to ship the food around the world is also ruining our climate.
The best way to tell people about climate change is through non-fiction. There's a vast literature of outstanding writing on the subject.
We have known since the 1800s that carbon dioxide traps heat in the atmosphere. The right amount keeps the climate conducive to human life.
We believe addressing the risk of climate change is a global issue.
Putting a price on carbon pollution is one of the best things we can do to stem the tide of climate change.
Politicians or pundits can distort or cherry-pick climate science any way they want to try and gain temporary influence with the public. But any serious industrialist who's facing 'climate exposure' - as it's now called by money managers - cannot afford to engage in that sort of self-delusion.
Nature is not simply a technical or economical resource, and human beings are not mere numbers. To suggest that one can somehow align all the squabbling institutions of science, environmental management, government and diplomacy in an alliance of convenience to regulate the global climate seems to me optimistic.
I believe that climate change represents one of the greatest threats to our national security and our planet.
Climate change knows no borders. It will not stop before the Pacific islands and the whole of the international community here has to shoulder a responsibility to bring about a sustainable development.
Healthy forests and wetlands stand sentry against the dangers of climate change, absorbing carbon dioxide from the atmosphere and locking it away in plants, root systems and soil.
However useful computer models may be, the one thing they cannot be is evidence. Computer climate models are simply conjectures.
I don't know much about climate change. But I'm pretty sure we better figure out what to do to lessen its impact - at least its health impact - and that's not going to happen unless you have a lot of young talent interested in these topics.
I'm against unanswerable concentrations of power, whether that be government or private industry or religious figures - anybody who is not accountable to the larger social climate or society for the power they wield, that concerns me. I'm very pro-democracy.
Climate change is not a discrete issue; it's a symptom of larger problems. Fundamentally, our society as currently designed has no future. We're chewing up the planet so fast, in so many different ways, that we could solve the climate problem tomorrow and still find that environmental collapse is imminent.
It's the poorer people in tropical zones who will get really hit by climate change - as well as some ecosystems, which nobody wants to see disappear.
Despite widely differing perspectives and agendas, there seems to be a remarkable global consensus that has built up over a fairly short period of time that climate change and ecology is one of the truly defining issues for humanity.
Taking bold action on climate change simply makes good business sense. It's also the right thing to do for people and the planet. Setting a net-zero GHG emissions target by 2050 will drive innovation, grow jobs, build prosperity, and secure a better world for what will soon be 9 billion people.
We need to start by having a conversation about climate change. It would be irresponsible to avoid the issue just because it's uncomfortable to talk about.
We are already experiencing the symptoms of climate change, especially with a hotter and drier climate in southern Australia - the rush to construct desalination plants is an expensive testament to that.
I sort of feel that climate change will be solved by science. I just feel instinctively that we will find a way of saving ourselves. But I am less confident that we won't destroy ourselves in other ways.
The shift to a cleaner energy economy wont happen overnight, and it will require tough choices along the way. But the debate is settled. Climate change is a fact.
I'm a pragmatist.
Newport Center has become a Mediterranean town. The climate here is the same as the Mediterranean's, and so is the architecture. This center exudes a radiance, an energy. It will become a special way of life for everyone.
Business leaders, social justice groups, farmers and ranchers, doctors and nurses and people from all walks of life are concerned about the climate threat.
For someone with a background of economic justice, what scared me about climate change is not just that the sea level will rise and we'll have more storms - it's how this intersects with that cocktail of inequality and racism.
We can look back through ice-core data and see over 800,000 years, relationships between carbon dioxide and the temperature of the world. So those people who deny the importance of climate change are just wasting their time. They're also being diversionary because if we don't act the risks are enormous.
Sometimes you have to not just dream about what could be - you get out and push and you pull and you preach. And you create a climate and environment to get those in high places, to get men and women of good will in power to act.
My role is to try to remove the impediments to entrepreneurs' chance to succeed. It's about improving the business climate to give people a better chance of succeeding.
On climate change, we are told that there will be a civilization-ending development in the form of massive sea level rise as soon as 2050. Anybody plan to be here in 2050? I think a few of us do, myself included.
Our message to leaders from every continent was simple: California has succeeded on climate and clean energy because we've emphasized local, human values and built a coalition that includes community and environmental leaders, working families, and communities of color - as well as unions and progressive business.
I have to say that if our global alliances are going to be alliances with Hezbollah and Hamas and Hugo Chavez's Venezuela and Vladimir Putin's Russia, there is absolutely no chance of building a world-wide alliance that can deal with poverty and inequality and climate change and financial instability, and we've got to face up to that fact.
We need healthy forests if we want to protect our climate. As the climate changes, forests become more vulnerable to insect outbreaks, droughts and wildfires. Simultaneously, when our forests are destroyed, their carbon is released back into the atmosphere, further impacting climate change. It's a horrifying one-two punch.
