As the leader of an oil-producing nation, I know how hard it can be to prioritize environmental issues, but the short-term risk to our economic security is far outweighed by the potential risk to our national and regional security.

We'll continue to see more and more brands integrate social causes, charitable components and environmental issues as underlying themes to their campaigns and messaging. Humans connect with humans after all, and brands are using this as a point of connection to engage with their audience, especially charity-minded Generation Y.

We're taking climate change seriously. But it's not the only environmental issue that we face as a planet.

I have thought for years environmental issues need to be depoliticized.

Climate change is happening, humans are causing it, and I think this is perhaps the most serious environmental issue facing us.

It is extremely important to me that the social and environmental issues associated with the production of fashion clothing are addressed.

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

I think we'd be crazy to do anything to the integrity of our policy package, which is progressive, and really dealing with the key social and environmental issues that we face. We're not about to ditch our commitment to nuclear disarmament, for example, to somehow make ourselves more electable.

I'd say that animal rights and environmental issues have always been at the forefront of my mind.

We had a great chance in the mid-2000s to reach an accord with the Chinese on both energy and environmental issues. That deal would have essentially been that the U.S. could provide the equipment and expertise, and the Chinese would help close the trade gap. It was a huge opportunity that we failed to exploit.