A Quote by James Hansen

The climate is nearing tipping points. Changes are beginning to appear and there is a potential for explosive changes, effects that would be irreversible, if we do not rapidly slow fossil-fuel emissions over the next few decades.
Most climate debates have focused on cutting the use of fossil fuels. But besides a few high-profile scuffles over fuel extraction in vulnerable wild places like the offshore Arctic, political leaders have ignored fossil fuel production as a necessary piece of climate strategy.
Of course climate changes. Many changes are due to factors over which humans have no control, such as winds, ocean currents, and sun activity. But the liberals want us to believe that climate change is also caused by gases expelled when humans burn so-called fossil fuels.
CO2 is a minor player in the total system, and human CO2 emissions are insignificant compared to total natural greenhouse gas emissions. Therefore, lowering human CO2 emissions will have no measurable effect on climate, and continued CO2 emissions will have little or no effect on future temperature....While controlling CO2 emissions from burning fossil fuels may have some beneficial effects on air quality, it will have no measurable effect on climate, but great detrimental effects on the economy and our standard of living.
Most reputable scientists agree that climate change is real and that the effects are likely to be bad. But nobody can say for sure exactly what 'bad' means. The safest and most equitable way out of this horrific mess is simple: cut fossil-fuel emissions.
Climate has always changed. It always has and always will. Sea level has always changed. Ice sheets come and go. Life always changes. Extinctions of life are normal. Planet Earth is dynamic and evolving. Climate changes are cyclical and random. Through the eyes of a geologist, I would be really concerned if there were no change to Earth over time. In the light of large rapid natural climate changes, just how much do humans really change climate?
We're handing them [young people & future generations] a climate system which is potentially out of their control. We're in an emergency: you can see what's on the horizon over the next few decades with the effects it will have on ecosystems, sea level and species extinction
Of course methane is a fossil fuel, but as long as it is burned efficiently and fugitive emissions of methane gas are minimised, it is a less harmful fossil fuel than coal and oil and is an important way-station on the global journey towards low-carbon energy.
The American Republican Party is the last political bastion of the fossil fuel industry - now so in tow to the fossil fuel industry that it cannot face up to the realities of carbon pollution and climate change.
Every candidate running for president has got to answer the following very simple question: At a time when we need to address the planetary crisis of climate change, and transform our energy system away from fossil fuels and into energy efficiency and sustainability, should we continue to give $135 billion in tax breaks and subsidies over the next decade to fossil fuel companies?
A Soviet man is a product of invisible changes, degradation and progressive deformation. Breaking the chain of those changes is hard. Perhaps they are irreversible.
No evolution is accomplished in nature without revolution. Periods of very slow changes are succeeded by periods of violent changes. Revolutions are as necessary for evolution as the slow changes which prepare them and succeed them.
There is a majority of scientists that say that global carbon emissions by humans causes some changes in the climate.
We're facing enormous changes in our planetary life, with climate change and the adaptations that all natural systems are going to have to make to these climate changes, and so it's extremely important to bear witness to what's happening.
Making small changes every week over a few months will result in huge changes.
Adaptation is the only means to reduce the now-unavoidable costs of climate change over the next few decades
Many scales of climate change are in fact natural, from the slow tectonic scale, to the fast changes embedded within glacial and interglacial times, to the even more dramatic changes that characterize a switch from glacial to interglacial. So why worry about global warming, which is just one more scale of climate change? The problem is that global warming is essentially off the scale of normal in two ways: the rate at which this climate change is taking place, and how different the "new" climate is compared to what came before.
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