The five warmest years over the last century occurred in the last eight years.

The five warmest years over the last century occurred in the last eight years.

Recent warming coincides with rapid growth of human-made greenhouse gases. The observed rapid warming gives urgency to discussions about how to slow greenhouse gas emissions.

Adding CO2 to the air is like throwing another blanket on the bed.

As species are exterminated by shifting climate zones, ecosystems can collapse, destroying more species.

Because cap and trade is enforced through the selling and trading of permits, it actually perpetuates the pollution it is supposed to eliminate.

Climate change is analogous to Lincoln and slavery or Churchill and Nazism: it's not the kind of thing where you can compromise.

Coal is responsible for as much atmospheric carbon dioxide as other fossil fuels combined and it still has far greater reserves. We must stop using it.

Global warming isn't a prediction. It is happening.

I have been described as the grandfather of climate change. In fact, I am just a grandfather and I do not want my grandchildren to say that grandpa understood what was happening but didn't make it clear.

I tend to be naive and gullible, I guess, but I try to believe that governments believe what they say.

If your child gets asthma, the fossil fuel industry doesn't pay. Or if there's a natural disaster, the bill is paid by the taxpayer, not the fossil fuel company.

It's as certain that as long as fossil fuels are the cheapest energy, we will just keep burning them.

Jail threats did not dissuade Martin Luther King - and intergenerational justice is a moral issue of comparable magnitude to civil rights.

On a per capita basis, Britain is responsible for more of the carbon dioxide now in the atmosphere than any other nation on Earth because it has been burning it from the dawn of the Industrial Revolution.

Several times in Earth's history, rapid global warming occurred, apparently spurred by amplifying feedbacks. In each case, more than half of plant and animal species became extinct. New species came into being over tens and hundreds of thousands of years. But these are time scales and generations that we cannot imagine.

Talking nice about sun and wind and green jobs is just greenwash.

The United States did not sign Kyoto, yet its emissions are not that different from the countries that did sign it.

The fact is fossil fuel carbon will stay in the surface climate system for millennia.

The trains carrying coal to power plants are death trains. Coal-fired power plants are factories of death.

We have known since the 1800s that carbon dioxide traps heat in the atmosphere. The right amount keeps the climate conducive to human life.

We need to send a message to Congress and the president that we want them to take the actions that are needed to preserve climate for young people and future generations and all life on the planet.

What has become clear from the science is that we cannot burn all of the fossil fuels without creating a very different planet.

What makes tar sands particularly odious is that the energy you get out in the end, per unit carbon dioxide, is poor. It's equivalent to burning coal in your automobile.

What we are doing to the future of our children, and the other species on the planet, is a clear moral issue.

With a fourth generation of nuclear power, you can have a technology that will burn more than 99 percent of the energy in the fuel. It would mean that you don't need to mine uranium for the next thousand years.

You can't tie a rope around the ice sheet. You can't build a wall around the ice sheets.

You can't turn on your television without seeing these advertisements about clean coal, clean tar sands and the claim that there's more jobs associated with fossil fuels than other industries. That's of course not true. But they're hammering that into the voters' heads.

We are on the precipice of climate system tipping points beyond which there is no redemption.

Interference with communications of science to the public has been greater during the current administration than at any time in my career.

Being at NASA and having the access to both computing capability and satellite observation capability is kind of the ideal research situation to try to understand global climate change.

The urgency derives from the nearness of climate tipping points.

I was surprised that the TV series was popular itself, but after that it went on to become more popular over the years and thus it seemed eventually that they would turn it into a movie.

I prefer to remember the happy things over 10 years, the things that went well. Let me see, what did go well?

What I try to do for my readers is to pass on some of the things that I found out about being thirteen after doing it for forty years.

I think I've become a much better singer and a much better player. Years and years of playing a couple of hours every day will do that.

There is no need to do any housework at all. After the first four years the dirt doesn't get any worse.

The robe of flesh wears thin, and with the years God shines through all things.

The Republicans claim they are for strengthening Pell grants when the truth is that over the last four years, their legislation has done the exact opposite.

I want to thank all the fans for their support over the years. Keep supporting the Knicks, we're moving in the right direction here and we will be exciting to watch and competing against the best in the NBA. Come back to the Garden for those exciting games.

I am told that there have been over the years a number of experiments taking place in places like Massachusetts Institute of Technology that have been entirely based on concepts raised by Star Trek.

I couldn't sleep for two years, they tried to break my nerves. They used a lot of psychology to brainwash.

What the war did was give me the opportunity of three years of continuous reading, and it was in the course of reading that I became convinced that I should become an economist.

You look at the whole Human Rights questions, I happened to be there at just the right time when the country was awakening - this goes to the first question you asked - the whole country was awakening to a hundred years of injustice that hadn't been resolved yet.

We started filming in 1993 which was only four years after the fall of communism. The difference in Budapest over the last five years has been remarkable.

I had a wonderful time with the Stones but after 31 years, I thought it was time to move on.

The average life spans of many bands are not that long, up to five years if they are lucky.

For years the Trio did nothing but play for musicians and other hip people. We practically starved to death.

Had the Hebrews not been disturbed in their progress a thousand and more years ago, they would have solved all the great problems of civilization which are being solved now under all the difficulties imposed by the spirit of the Middle Ages.