Jon Keyser Quotes

Some time this century, the day will arrive when the human influence on the climate will overwhelm all natural factors.'

The basic scientific conclusions on climate change are very robust and for good reason. The greenhouse effect is simple science: greenhouse gases trap heat, and humans are emitting ever more greenhouse gases.

The science linking the increased frequency and severity of extreme weather to the climate crisis has matured tremendously in the last couple of years.

The climate has been changing since there was a climate.

I think there is a degree of speculation that is satisfied the climate is changing.

This notion that manmade climate change is happening is wrong.

Well, I think it's clear that the climate is changing. I think reasonable people can differ about how much and how rapidly. But I think it's clear that it's changing and it's clear that humans are a contributing factor.

The evidence for human-made climate change is overwhelming.

The bottom line is that when Senator Inhofe says, 'Global warming is a hoax,' he is just dead wrong, according to the vast majority of climate scientists.

The effects of climate change are real and must be acted on.

For every expert that says humans are the cause of 'climate change' there are 10 more who say we aren't.

The number of hypotheses and theories about climate change are numerous. Quite naturally they have caught the public attention, as any proof of past climactic change points to the possibility of future climate change, which inevitably will have significant implications for global economics.

Our climate is always changing.

I believe in climate change.

Climate change is real and we have to address it.

The science is clear that there is an increase in the amount of CO2 in the atmosphere. What is not clear from the science is how much of that increase is caused by human activity; and what also is not clear is what impact those increases have on the climatic cycle.

Climate change is real.

Those who deny human-caused climate change offer no compelling evidence to better explain the undeniable rise in atmospheric concentrations of greenhouse gases and global temperature.

What do we do about climate change bearing down upon us?

The idea that human beings have changed and are changing the basic climate system of the Earth through their industrial activities and burning of fossil fuels - the essence of the Greens' theory of global warming - has about as much basis in science as Marxism and Freudianism.

Geological change usually takes thousands of years to happen but we are seeing the climate changing not just in our lifetimes but also year by year.

By the time we see that climate change is really bad, your ability to fix it is extremely limited... The carbon gets up there, but the heating effect is delayed. And then the effect of that heat on the species and ecosystem is delayed. That means that even when you turn virtuous, things are actually going to get worse for quite a while.

We can look back through ice-core data and see over 800,000 years, relationships between carbon dioxide and the temperature of the world. So those people who deny the importance of climate change are just wasting their time. They're also being diversionary because if we don't act the risks are enormous.

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.

Even if we were to stop putting out greenhouse gases right now, we'd still face decades of warming.