In my personal belief, the big problem with climate change is getting people to understand the magnitude and scale that we're dealing with. If you buy a vehicle that gets 35 miles to the gallon, that means nothing; it's not enough. We need to make changes across society and in every piece of the energy pie.

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.

I don't believe - till something radical changes that we are not on track to do - that hybrids are material to climate change. They're fashionable, everybody loves them, the Prius is selling well, but so are Gucci bags. But they don't impact the way the world carries stuff. You know it's a fashion statement.

Maybe this isn't a common thought that goes through one's mind when considering children, but I think about the ramifications of climate change and how the extreme weather conditions will only get worse as we keep drilling for oil and fracking for natural gas. Do I want to bring a little human into that mix?

When I was energy and climate change secretary I sat around a cabinet table with Gove, and he couldn't help playing to the Tory climate-sceptic audience. As education secretary, he tried to ban climate change from the geography curriculum. After an angry exchange of letters with me, he eventually backed down.

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.

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.

Climate change should not fundamentally be seen as a political or partisan issue, but it has been turned into a political football primarily by the climate deniers who have a vested interested in maintaining the status quo. That includes certain industrial interests, financial interests and political interests.

Food choices are something fundamental you can control about yourself: what you take into your body. When so many other things are out of control and your influence over climate change - all these much larger issues - it's very hard to see any results or any progress. But everybody can see progress around food.

How is it that, in the face of overwhelming scientific evidence, there are still some who would deny the dangers of climate change? Not surprisingly, the loudest voices are not scientific, and it is remarkable how many economists, lawyers, journalists and politicians set themselves up as experts on the science.

In the age of global warming hysteria and the $93 trillion 'Green' New Deal, leftist advocates for more government intervention in the economy under the guise of environmentalism have engaged in a new smear: If you don't buy into climate change hysteria, you're a 'denier' who doesn't care about the environment.

Climate change and ozone depletion are two global issues that are different but have many connections. In the ozone depletion case, we managed to work with decision makers effectively so that an international agreement called the Montreal Protocol was achieved that essentially solved the ozone depletion problem.

When you run a company, you want to hand it off in better shape than you found it. In the same way, just as we shouldn't leave our children or grandchildren with mountains of national debt and unsustainable entitlement programs, we shouldn't leave them with the economic and environmental costs of climate change.

Opening up Atlantic and Arctic waters to drilling would lock the next generation into burning oil and gas in a way that only makes climate change that much worse, fueling ever rising seas, widening deserts, withering drought, blistering heat, raging storms, wildfires, floods and other hallmarks of climate chaos.

I think that once people understand the great risks that climate change poses, they will naturally want to choose products and services that cause little or no emissions of greenhouse gases, which means 'low-carbon consumption.' This will apply across the board, including electricity, heating, transport and food.

By isolating the issues of race, gender, sexual orientation, climate change, environment, governance, economics, catastrophe and whatever other problems the present embodies or the future may bring, science fiction can do what Dickens and Sinclair did: make real the consequences of social injustice or human folly.

It really gets on my goat that people keep quoting Dorothea Mackellar's 'My Country' as proof that there is no such thing as climate change. A poem written more than 100 years ago by a homesick 19 year old versus an ever-increasing body of refereed scientific thought... hmm, hard to know which way to jump, really.

We have been developing an ever closer relationship with China on climate change for many years which has led to collaboration on carbon trading, offshore wind development, on low-carbon buildings, on nuclear energy, and on carbon capture and storage - to name just some of the ways in which we're working together.

At first when I heard about climate change, I was a climate denier. I didn't think it was happening. Because if there really was an existential crisis like that, that would threaten our civilisation, we wouldn't be focusing on anything else. That would be our first priority. So I didn't understand how that added up.

City farming is not only possible, it is the very definition of the kind of meaningful, sustainable innovation we will need to meet the grand challenges of the 21st century: climate change; population growth; ageing population; urbanization; rising demand for energy, food and water; poverty; and access to healthcare.

Some global hazards are insidious. They stem from pressure on energy supplies, food, water and other natural resources. And they will be aggravated as the population rises to a projected nine billion by mid-century, and by the effects of climate change. An 'ecological shock' could irreversibly degrade our environment.

First, how do we give everyone a fair shot at opportunity and security in this new economy? Second, how do we make technology work for us, and not against us - especially when it comes to solving urgent challenges like climate change? Third, how do we keep America safe and lead the world without becoming its policeman?

The scientific community should work as hard as possible to address major issues that affect our everyday lives such as climate change, infectious diseases and counterterrorism; in particular, 'clean energy' research deserves far higher priority. And science and technology are the prime routes to tackling these issues.

The more hardcore conservative you are, the more tightly identified you are with defending the interest of capital as an interest of the system based on hyper-competition, the more likely it is that you vehemently deny climate change. Because if climate change is real, your worldview will come crashing down around you.

On healthcare, climate change, nuclear disarmament, gun control and countless other issues, President Obama consistently made difficult choices and put the national interest over his own political interest to do what was right. All the while, he resisted the politics of cynicism in a system that too often encourages it.

A refugee in the traditional vision is someone who flees from country to another because of persecution or conflict. But what we're witnessing now more and more is a certain number of mega-trends interacting with one another: population growth, urbanization, food insecurity, water scarcity, climate change, and conflict.

The U.N. has brought peace and order to many places around the world. However, terrorism, violent extremism, violations of human rights, natural disasters caused by climate change - they all threaten the lives of people today. Add migration, insufficient health care, lack of education, and the picture gets even bleaker.

Hosting over 35,000 concerts and festivals each year, Live Nation has the opportunity and responsibility to provide our artists and fans with a live music experience that protects our planet. The adverse effects of climate change are undeniable, and we want to use our place on the world stage to be part of the solution.

Climate change, in some regions, has aggravated conflict over scarce land, and could well trigger large-scale migration in the decades ahead. And rising sea levels put at risk the very survival of all small island states. These and other implications for peace and security have implications for the United Nations itself.

More and more businesses are seeing the potential of a more sustainable business model, driven both by the firm belief that business can be a force for good and by the realization that the cost of inaction often exceeds the cost of action - notably when it comes to the growing threat of climate change and water scarcity.

Climate change is important to Malawi, but many people see alternative energy more as a means to skip the government and get electricity and power. Deforestation is a huge problem in Malawi, which only adds to the problem. People cut down trees because they have no power to run electric stoves, etc. So they use firewood.

Climate change denial, anti-vaccination proponents, creationist teachers, faith healers, fake bomb detector peddlers, psychic frauds, alternative medicine pushers... we need scientific thinking. We need a generation of kids who think an experiment is more important than a preconceived notion or an argument from authority.

On the environment and climate change, I suspect that future generations will think there was too much timidity, too much fear of upsetting business. Basically, New Labour was very nervous about regulating business, or requiring it to do anything, even when there was a very clear social or environmental case for doing so.

Even if every major government were to slap huge taxes on carbon fuels - which is not going to happen - it wouldn't do much to halt climate change any time soon. What it would do is cost us hundreds of billions - if not trillions - of dollars, because alternative energy technologies are not yet ready to take up the slack.

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.

We need policy change, and the most important thing people can do is to contribute and participate in the political process. We have to vote climate change deniers and people who will create subsidies for the fossil fuel industry out of office. We have to protest when bad decisions are being made about fracking or tar sands.

Any objective look at what science has to say about climate change ought to be sufficient to persuade reasonable people that the climate is changing and that humans are responsible for a substantial part of that - and that these changes are doing harm and will continue to do more harm unless we start to reduce our emissions.

Being told about the effects of climate change is an appeal to our reason and to our desire to bring about change. But to see that Africans are the hardest hit by climate change, even though they generate almost no greenhouse gas, is a glaring injustice, which also triggers anger and outrage over those who seek to ignore it.

Climate change joined immigration, job creation, food safety, pilot training, veterans' care, campaign finance, transportation security, labor law, mine safety, wildfire management, and scores of executive and judicial appointments on the list of matters that the world's greatest deliberative body is incapable of addressing.

Climate change is often the first thing I think about it in the morning, and the last thing I think about before I go to bed. It is not something that escapes that my mind, so inevitably, I had to kind of express that existential terror through art and music. My hope is to channel that confusion and energy into something good.

When all the world appears to be in a tumult, and nature itself is feeling the assault of climate change, the seasons retain their essential rhythm. Yes, fall gives us a premonition of winter, but then, winter, will be forced to relent, once again, to the new beginnings of soft greens, longer light, and the sweet air of Spring.

Today's voguish threats, including climate change, population growth, massive war, and resource depletion, are all amenable to a fix if we act prudently. And even if we don't, these problems are incapable of obliterating all of humanity, let alone destroying the Earth. No, the real End of Days will happen slowly, as the Sun ages.

There's an apparent freedom, an apparent liberty of access to everything, but you can't use it because it's too much. Everything is at the same level. You even have fake news. You have to go through fake news to make up your mind. Facts and lies are treated as equal. There are even people who are against the idea of climate change.

This is the game of those who deny climate change or who deny the need for sustainability. They say, 'They are going to take everything away from us. They are going to take our cars away from us. They are going to take our steaks from us. They are going to take all the things that make life nice away from us. So let's not go there.'

The power of the individual, market forces, and the private sector permeate our lives. With that power comes responsibility to address huge challenges. Climate change cannot be solved by governments alone. Xenophobia, hatred, and intolerance - more business leaders have to play a role in trying to be positive leaders, civic leaders.

Some argue that now isn't the time to push the green agenda - that all efforts should be on preventing a serious recession. That is a false choice. It fails to recognise that climate change and our carbon reliance is part of problem - high fuel prices and food shortages due to poor crop yields compound today's financial difficulties.

We have a structural problem because you can simultaneously understand the medium to long-term risks of climate change and also come to the conclusion that it is in your short-term economic interest to invest in oil and gas. Which is why, you know, anybody who tells you that the market is going to fix this on its own is lying to you.

There are philosophical issues involved in that about choosing the right discount rate, the value, the future, and things like that which drive it. But its start with the premise that global warming is real and if you're a denier of that fact, then you're not going to find climate change mitigation policies to have particular appeal.

The majority of America wants action on climate change. The majority of America thinks we should regulate carbon dioxide as a pollutant. And the majority of America thinks we should prioritize solar and wind infrastructure over fossil fuels. Those are impressive majorities, ones that every office seeker and office holder should heed.

The cost of our success is the exhaustion of natural resources, leading to energy crises, climate change, pollution, and the destruction of our habitat. If you exhaust natural resources, there will be nothing left for your children. If we continue in the same direction, humankind is headed for some frightful ordeals, if not extinction.

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