Barack Obama Quotes

Scientists speak a certain language. Now there are regular extreme weather reports on the news. Hurricane Katrina was a huge connect-the-dot moment for a lot of people.

In the last two years 24 countries have set new all-time temperature records. We've seen flooding on an epic scale in every continent .

People are seeing the impact of climate change around them in extraordinary patterns of floods and droughts, wildfires, heatwaves and powerful storms.

I grew up in Texas, but that was 20 years ago. Last year, in Fort Worth, they had hail the size of softballs. We're seeing more and more powerful storms, of all types, almost on a biblical level.

Every day, it seems, a new extreme weather catastrophe happens somewhere in America, and the media's all over it, profiling the ordinary folks wiped out by forest fires, droughts, floods, massive sinkholes, tornadoes.

At least 3,527 U.S. monthly records for heat, rain, and snow were broken in 2012. We can't let this continue unchecked, and we don't have to.

If there's horrible flooding in Pakistan or a horrible heat wave in Texas, we're no longer able to call it an act of God, or a natural disaster, or something like that, the way we could have through all of human history until 35 or 40 years ago.

All across the world, ...increasingly dangerous weather patterns and devastating storms are abruptly putting an end to the long-running debate over whether or not climate change is real. Not only is it real, it's here, and its effects are giving rise to a frighteningly new global phenomenon: the man-made natural disaster.

The record rainfall and storm surges that have brought flooding across the UK are a clear sign that we are already experiencing the impacts of climate change.

The floods and fires and storms and droughts that Australia has suffered in the last few years have left no doubt in many Australians' minds about just how much is a stake in a super-heated world.

What I worry about is climate change, because that would have untold effects that we can't even measure yet.

For millions of Americans, climate change is no longer just a chart or a graph. It's the smoke on our tongues from massive wildfires. It's the floodwater invading our homes and record-breaking hurricanes and heat waves.

There are parts of the Earth that are covered with pollution all the time. I saw weather that was unexpected. Storms bigger than we've seen in the past. This is a human effect. This is not a natural phenomenon.

Our analysis shows that, for the extreme hot weather of the recent past, there is virtually no explanation other than climate change. The deadly European heat wave of 2003, the fiery Russian heat wave of 2010 and catastrophic droughts in Texas and Oklahoma last year [2011] can each be attributed to climate change. The odds that natural variability created these extremes are minuscule, vanishingly small. To count on those odds would be like quitting your job and playing the lottery every morning to pay the bills.

We need the science to continue. The heat, the storms, the sea level rise, the Arctic melting. These are all real facts that over time will sink in. The question is, will that be two years, or five years or 10 years?

The most blatant examples are increased power and frequency in hurricanes and the increased depth and frequency of heat waves.

There is an emerging scientific consensus that global warming is making hurricanes more intense and more destructive. It turns out that Katrina fits into a pattern that scientists and greens have been trying to warn us about for a long time.

The climate system is being pushed hard enough that change will become obvious to the man in the street in the next decade.

Our climate is changing. And while the increase in extreme weather we have experienced in New York City and around the world may or may not be the result of it, the risk that it may be - given the devastation it is wreaking - should be enough to compel all elected leaders to take immediate action.

global warming. every day i leave my house and think, "was it this hot last year?" the heat this summer here in LA and in most of the US has been unbearable. i can't remember another time when it was 105 degrees fahrenheit out here (40.5 celsius), and that's the kind of weather we've been having pretty much every day.

A hotter, moister atmosphere is an atmosphere primed to trigger disasters.

Unfortunately, what is happening now in our central regions is evidence of this global climate change, because we have never in our history faced such weather conditions.

What's at risk [in 100 years] if we do not take action, truly is the survival of civilization as we know it... Literally that is the case. We have seen global warming so far of just a little bit less than one degree Celsius and look at what's happened. Superstorm Sandy. Boulder Colorado. All these fires. Hurricane Irene one year before.

We go on dating from Cold Fridays and Great Snows; but a little colder Friday, or greater snow would put a period to man's existence on the globe.

The mountain glaciers in every region of the world are melting, many of them at an accelerated rate, threatening drinking supplies - drinking water supplies and agricultural water supplies. We have these record storms, drought, floods, fires, three deaths (ph) in the American West, climate refugees beginning now, expected to rise to the hundreds of millions unless we take action.