I support an all-of-the-above approach attacking climate change - everything from moving America towards being carbon-neutral, moving our country towards clean energy.
We had some major successes and we did so because the country embraced the spirit of Earth Day and embraced this concept that we have to have forward-looking, visionary environmental policy and energy policy in this country.
The Kyoto Protocol...the first component of an authentic global governance.
Buying pollution credits is folly; it doesn't help the environment. Instead of using tax dollars to buy credits overseas, we'll use them at home.
We will stand by the Paris climate deal.
A new study says that working fewer hours can slow global warming. So you know what that means? President Obama's economic policy is also his climate change policy.
My goal as governor is for Colorado to have the cleanest air and the cleanest water in the country, and to be a model for the nation in using clean, renewable sources of energy.
We want to use the environment to shift the way our society works.
Preservation of our environment is not a liberal or conservative challenge, it's common sense.
By leading on a strong emissions reduction target, the U.K. is persuading others on the need for member states to have the freedom and flexibility to develop their own energy mix to achieve these ambitious reductions.
It will be up to Congress to check the president's ambition of committing the U.S. to an international green scheme that will produce little or no return.
There is a reason and a need to have an Environmental Protection Agency.
Recently though, our State Governments have discussed instigating a carbon trading scheme - the details are still to be decided - and that's an encouraging sign.
You can't solve climate change by everybody individually buying a more efficient car and throwing out less stuff. You have to make national changes through national policy.
I think it's harder for people than it should be. But as more and more of us become carbon neutral and change the patterns in our lives to be part of the solution instead of part of the problem, we are now beginning to see the changes in policy that are needed.
If you had a carbon tax, you'd have less cars and more bicycles, more people getting around on foot and by public transport.
It is manifestly in the interest of the United States to deal with the very real threat that climate change poses. And that's why President Obama has worked so hard to reduce our own emissions and to lead internationally in forging the Paris climate agreement.
Like every other viable environmental policy, the search for clean energy begins at home.
The Green Belt is a Labour achievement - and we mean to build on it.
We decided that the environment was an integral part of our policies and the political thrust of our government. We gave it the priority and we sustained it with the money required to make it happen.
As someone who lives with adult-onset asthma, I know how bad air quality in the capital has become. I want to be the greenest mayor London has ever had - it is not acceptable that 10,000 people die in London every year because our air is so filthy.
Germany is using its Energiewende policy as a way of envisioning a green transformation and innovation across many sectors.
As the people at the sharp end of delivering the government's commitment to tackle climate change we know attaining zero carbon status has always involved a flexible approach.
[Jill Stein] want a global treaty to halt climate change that adds teeth and ends destructive energy extraction.
Green policy is about triggering a shift to a cleaner way of doing things. To be effective, it needs to incentivise the right behaviour, for example through tax breaks, and that needs to be paid for by disincentives on polluting behaviour.
