At the Global Crop Diversity Trust, we work to conserve the diversity that will allow the adaptation and evolution of our agricultural crops in the context of climate change and other challenges.
Climate change and dependence on foreign oil are problems that won't go away on their own. Tabling plans to deal with them doesn't make it easier for companies to plan and invest; it makes it harder.
Foreign policy is inseparable from domestic policy now. Is terrorism foreign policy or domestic policy? It's both. It's the same with crime, with the economy, climate change.
George W. cares as much about climate change as you would expect from a Texas oilman.
For all of the hurtling towards climate change, there's also a lot more understanding of it than there was when we were kids. They don't call environmentalists tree huggers any more, so there's hope!
The biggest barrier to dealing with climate change is us: our own attachment to habits that are hard to shift, and our great ability to park or ignore uncomfortable choices.
Greenhouse gas pollution, through its contribution to global climate change, presents a significant threat to Americans' health and to the environment upon which our economy and security depends.
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.
I have not made any suggestions about climate change. This is more about blending or shifting the conversation about the environment versus the economy. It's just such an old, outdated conversation.
Climate change is analogous to Lincoln and slavery or Churchill and Nazism: it's not the kind of thing where you can compromise.
People are seeing the impact of climate change around them in extraordinary patterns of floods and droughts, wildfires, heatwaves and powerful storms.
I don't think we're yet evolved to the point where we're clever enough to handle a complex a situation as climate change. The inertia of humans is so huge that you can't really do anything meaningful.
I think there's plenty of evidence that we need to stop spewing so much carbon into the air, that we're contributing to climate change and that we ought to look for alternatives.
Look, very clearly there are things that need to be done urgently in relation to climate change, and of those the most obvious is to have an enforceable and equitable arrangement delivering deep cuts in emissions into the middle of the century.
The forces that are in play on climate change essentially revolve around the generation of power, the transportation of goods and services and people, and the sorts of materials that we use to fuel the whole of our civilisation.
And given that there's been probably a ten-fold amount of information about terrorism through the media than there has about climate change; I think that's quite an interesting statistic.
There are plenty of problems in the world, and doubtless climate change - or whatever the currently voguish phrase for it all is - certainly is one of them. But it's low on my list.
You always have to be worried about something that is considered a so-called 'scientific theory' that fits every scenario. Climate change, as they've defined it, can never be disproved.
I'm a fiscal hawk. I vote against all taxes, but I do believe the environment, and climate change, is a bigger issue than fiscal deficits are as a risk to the nation.
Our economic system, run for profit and waste and based primarily on the extractive industries, is the cause of climate change. We have wasted the earth's treasure and we can no longer exploit it cheaply.
I believe we should reframe our response to climate change as an imperative for growth rather than merely being a way of being green or meeting environmental commitments.