Climate change is the world's greatest environmental challenge. It is now plain that the emission of greenhouse gases, associated with industrialization and economic growth...is causing global warming at a rate that is unsustainable.
Warming of the climate system is unequivocal...most of the global average warming over the past 50 years is very likely due to anthropogenic greenhouse gases increases.
Even if we didn't have greenhouse gases, were going to have to move away from fossil fuels, as we're going to run out. They're finite, whereas solar and wind are infinite.
That's right-the striking thing about greenhouse gases is the diversity of sources that emit them. A herd of cattle belching can be worse than highway full of hummers.
It's very important that we expand our use of clean energy and make a long-term commitment to it. Biodiesel and ethanol are better for the environment and for the air we breathe. The use of biodiesel is a positive step toward minimizing pollutive emissions and greenhouse gases. By focusing on school buses, we can affect the health and wellbeing of the people most susceptible to that pollution - our children - today.
Under my plan of a cap and trade system, electricity rates would necessarily skyrocket… Because I’m capping greenhouse gasses, coal power plants, natural gas…you name it…whatever the plants were, whatever the industry was, they would have to retro-fit their operations. That will cost money…they will pass that money on to the consumers.
I think we need to address greenhouse gas emissions. But I try to get involved in issues where I see a legislative result... So I just leave the issue alone because I don't see a way through it, and there are certain fundamentals, for example nuke power, that people on the left will never agree with me on. So why should I waste my time when I know the people on the left are going to reject nuclear power?
...the global surface albedo [surface whiteness] and greenhouse gas changes account for practically the entire global climate change.
...the contribution of greenhouse gases to the Vostok temperature changes can be...between a lower estimate of 40% and a higher estimate of 65%.
...99 percent confident that the world really was getting warmer and that there was a high degree of probability that it was due to human-made greenhouse gases.
The big damages come if the climate sensitivity to greenhouse gases turns out to be high causing greater global warming than current projections. Then it's not a bullet headed at us, but a thermonuclear warhead.
Temperature measurements in the arctic suggest that it was just as warm there in the 1930's...before most greenhouse gas emissions. Don't you ever wonder whether sea ice concentrations back then were low, too?
We [US] are the biggest per person, by a substantial amount, greenhouse emitters, and we give the most foreign aid, not per person but in absolute. This is another issue where hopefully we will take a long-term approach which, even though we sometimes have a hard time doing that, it's easier for us, as a rich country with this kind of scientific depth, than it is for the poor countries who will suffer the problems.
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.
Mars has global warming, but without a greenhouse and without the participation of Martians. These parallel global warmings - observed simultaneously on Mars and on Earth - can only be a straightline consequence of the effect of the one same factor: a long-time change in solar irradiance.
It is critical that the world captures every last bit of energy efficiency, if we are to reduce greenhouse gas emissions enough to keep below dangerous rises in temperature. I am pleased that this important new study shows how information and communication technology can play an essential role in saving energy. Now we need more and effective government policies that reward such action and penalize delayed responses.
Sundance Supply has a neat material calculator and free greenhouse designs-Great Prices!
I've been vegan for 15 years, and it turns out it makes a very big impact on the environment to eat fewer animal products, which cause more greenhouse gases than all of transportation combined. The United Nations did a study just over two years ago, and that blew my mind. I started thinking that if people are vegetarian for just one day a week, that makes a huge difference!
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.
Although they [light and medium trucks] have only 5% of the transportation market..., they account for fully 35% of greenhouse gas emissions from freight transportation.
We have climate change caused by greenhouse gas emissions, mostly from human power and transportation infrastructure. At the same time, we have 2 billion people who live in energy poverty.
How are we going to know what impact that has on the greenhouse gas emissions? How are we going to hold everybody accountable for doing their part?
Bopha, Sandy, floods in Pakistan, droughts in China… How many reports from the likes of the World Bank, NASA and the International Energy Agency will it take? How many preventable catastrophes until our leaders realize that climate change will not be solved by nice speeches and empty promises? Countries like Canada and the U.S. have promised to reduce their greenhouse gas pollution and provide adequate financial support for developing countries, they have so far failed on both counts.
The road to energy independence, economic recovery, and greenhouse gas reductions runs through the building sector.
If you think that [Yale professor James] Saiers is in the greenhouse sceptics camp, then, if we can find documentary evidence of this, we could go through official AGU channels to get him ousted.
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