Putting aside for the moment the question of whether human industrial CO2 emissions are having an effect on climate, it is quite clear that they are raising atmospheric CO2 levels. As a result, they are having a strong and markedly positive effect on plant growth worldwide. There is no doubt about this.
Would you bet your paycheck on a weather forecast for tomorrow? If not, then why should this country bet billions on global warming predictions that have even less foundation?
The climate has been changing since there was a climate.
We must act to reduce the increasingly dangerous and destructive levels of carbon pollution that account for practically all of global climate change.
The carbon dioxide concentration in the atmosphere is measured. It's uncontroversial. It's going up. We know that has a tendency to warm the atmosphere and we should be worried about that.
The oceans that surround the world produce 185 billion tons of CO2 per annum. Man per annum only produces six billion tons, so what could possibly be the concern?
I'm not disputing that increasing CO2 emissions in the atmosphere is going to have an impact. It'll have a warming impact.
Few scientists now dispute that today's soaring levels of carbon dioxide and other gases in the atmosphere will cause global temperature averages to rise by as much as nine degrees Fahrenheit sometime after the year 2000.
I think the climate has been changing for billions of years.
I don't know the science behind climate change. I can't say one way or another what is the direct impact, whether it's man-made or not.
If the world gets a lot hotter in a hurry and the primary aim is to cool it down, then the current plan of carbon mitigation will almost certainly not be effective. It'll be too little, too late, and too optimistic - in large part because the atmospheric half-life of CO2 is roughly 100 years.
Much remains to be learned about stratospheric chemistry - and, in more general terms, about the physics and chemistry of the global atmosphere.
To survive, humans need food, water, and air. Yet biodiversity, the Earth's bodies of water, and the planet's atmosphere are all under threat.
Air is one we hold in common; it has a limited carrying capacity for pollutants and that's being used up by those who pollute the atmosphere. So we have to stop that externality. We would never allow a utility to put their coal slag in a dump truck and back it up to the city park and dump it in unlimited amounts for free. But that is exactly what we do with carbon dioxide and methane.
Some people call it global warming; some people call it climate change. What is the difference?
The first thing that is not obvious to people is global warming is a less-than-1% effect. It's like being shortchanged at the bank by a penny every dollar. Over a long period of time with lots of transactions, that piles up.
Prominent scientists have become increasingly convinced that the connection between carbon emissions and rising temperatures is real, but skeptics have whole truckloads of studies to demonstrate the opposite.
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.
Oil companies are radical because they're willing to alter the chemical composition of the atmosphere.
Loads of chemicals and hazardous wastes have been introduced into the atmosphere that didn't even exist in 1948. The environmental condition of the planet is far worse than it was 42 years ago.
The basic science is very well established; it is well understood that global warming is due to greenhouse gases. What is uncertain is projections about specifics in the next few decades, by how much will the climate change.
Climate change is real. Climate change is being substantially increased by humans and the carbon we put into the atmosphere. And it appears to be speeding up. If science has made any mistakes, science has been underestimating it.
… there is little evidence as to how it has come about, and no clear proof that the process is continuing in any considerable degree at the present time.
Not all eminent scientists were fully satisfied with Darwin's theory of evolution. Father of Genetics
Global warming is a scientific fact as much as the hole in the ozone layer or Earth's orbit around the sun.
What has become clear from the science is that we cannot burn all of the fossil fuels without creating a very different planet.