Placing limits on carbon pollution from power plants is about ensuring that we have clean air to breathe and communities that are safe to live in. Carbon pollution limits are about defending families who have borne the heaviest burden of the main pollutant that is driving climate change.
Clean air and a healthy climate benefit all of us, but it will take a diverse coalition to step up to the threat posed by unchecked climate change.
I believe climate change is real and that we can save our planet while creating millions of good-paying clean energy jobs.
We actually all care about the environment, and most people believe in climate change and believe that mankind has something to do with that - how much is scientifically debatable, but there is some effect and we all have an interest in reducing carbon emissions, just having cleaner air, cleaner oceans. It's something we can get behind.
I care about climate change because of our children. I want to safeguard their future.
Some scientists believe climate change is the cause of unprecedented melting of the North Pole, and that effects these very uncertain weather patterns. I think we should listen to those scientists and experts.
Climate change is a terrible problem, and it absolutely needs to be solved. It deserves to be a huge priority.
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.
I think there are more politicians in favor of electric cars than against. There are still some that are against, and I think the reasoning for that varies depending on the person, but in some cases, they just don't believe in climate change - they think oil will last forever.
Often times when you face such an overwhelming challenge as global climate change, it can be somewhat daunting - it's kind of like trying to lose weight, which I know something about.
Look at climate change; don't put your head in the sand. Understand that it is going to have profound effects on our resources and so much else.
If you take energy and climate change, you really cannot deal with the problems with energy and climate change without European co-operation at a high level. If you take digitalisation, it's an obvious area where European co-operation can actually make a difference.
Climate change is a global issue - from the point of view of the Earth's climate, a molecule of CO2 emitted in Bejing is the same as a molecule emitted in Sydney.
Climate change is hugely exacerbated by changing patterns of how we choose to live, often in danger zones such as extremely vulnerable coastal zones - from New Jersey to the Philippines. This enormously increases the economic and human costs of hurricanes, rising seas and changing weather patterns.
Hollywood is the perfect conduit for the urgent message about climate change. We raise awareness all the time. We routinely take a film that nobody knows about and get 80 percent of the public to know about it in just 30 days. That's called marketing. We need to harvest Hollywood for climate change awareness.
It is impossible to talk about slowing climate change without talking about reducing CO2 emissions. Equally, it is impossible to talk about adapting to climate change without considering how we will feed ourselves. And it is out of the question that we can adapt agriculture without conserving crop diversity.
The U.S. has historically been the world's largest contributor to climate change.
Issues of energy, climate change, nuclear arms control and non-proliferation are all big deals. These are problems that we have to get right globally, not just nationally, and there are big benefits in cooperating, in terms of sharing costs, in terms of sharing risks, in terms of propagating the best answers.
We are all living together on a single planet, which is threatened by our own actions. And if you don't have some kind of global cooperation, nationalism is just not on the right level to tackle the problems, whether it's climate change or whether it's technological disruption.
As an explorer, I know firsthand there are many places in the ocean so full of life that they should be protected. Coral reefs and mangrove coastlines are stressed already by climate change and ocean acidification, and poor planning will just make their plight worse.