This side-by-side animation shows the difference between a lower carbon emissions future and a higher carbon emissions future.
Light yellow represents locations where the temperature exceeds 100°F fewer than 10 days per year. Dark red represents locations where the temperature exceeds 100°F more than 120 days per year.Learn More >>
This animation illustrates how the summer climate of three states — Michigan, Illinois, and New Hampshire — would change by late this century if carbon dioxide emissions continue to grow.
The colors of the underlying map show the current annual average temperatures across the United States. The southward movement of the three states illustrates how dramatically climate would change.
The climate of Michigan by late this century might resemble that of Oklahoma today, while that of Illinois might come to resemble Texas today.Learn More >>
NEW: Resources Section
In our new "Resources" tab, you can explore resources on climate change and its communication, sorted into five categories. Included are some of our recent articles and talks, as well as particularly useful resources we've selected from around the web.
Animated and narrated graphics help tell the story of climate change science. Join Susan Hassol and Richard Somerville for a guided tour through some key graphics.
COMMON CLIMATE QUESTIONS
Is the Earth’s climate really warming?
Yes, it is an unequivocal fact that the Earth’s average temperature continues to rise, despite some natural year-to-year fluctuations. The hottest 10 years on record have all taken place in the ...Learn More >>
If forecasts can’t get next week’s weather right, how can we trust predictions for decades or centuries from now?
Weather and climate are not the same. Weather is individual, day-to-day atmospheric events; ...Learn More >>
How do we know recent climate change is caused by human factors rather than natural factors?
Climate changes observed over recent decades are inconsistent with trends caused by natural forces but are totally consistent with the increase in human- ...Learn More >>
Do climate scientists agree that the world is warming and that humans are the cause?
Scientists with relevant expertise agree that the world is unequivocally warming. They also agree that human activity is the primary cause of warming ...Learn More >>
How do we know the Sun is not the cause of recent warming?
Scientists have been measuring the amount of the Sun’s energy reaching the top of Earth’s atmosphere using sensors on satellites since 1978. ...Learn More >>
Might urban “heat islands” skew the global temperature record?
Scientists have accounted for these local effects and have verified that they do not skew the global temperature record. For example, one test scientists ...Learn More >>
Does the ice core record show that temperature drives CO₂, not the other way around?
Even though past warm episodes may have been initiated by orbital changes that caused warming and thus caused CO<sub>2</sub> ...Learn More >>
Did climate scientists in the 1970s warn of global cooling?
While some media outlets carried this story back in the 1970s, most climate scientists at the time were not concerned about global cooling. ...Learn More >>
Has the “hockey stick” graph been discredited?
Since that paper was published, a number of additional studies have analyzed proxies of past temperature. They all confirm the original “hockey stick” conclusion: the 20th Century is the warmest in the ...Learn More >>
Does satellite data show the atmosphere isn’t warming?
No. Early analyses of satellite data by one group in Alabama did suggest that there was little or no warming in the layer of atmosphere just above the ...Learn More >>
Do errors in the IPCC reports undermine confidence in the science?
Two small errors have been found in one of the IPCC 2007 reports. Neither has anything to do with the basic conclusions that the globe is unequivocally warming ...Learn More >>
Might volcanoes emit more carbon dioxide than human activities?
No. The burning of fossil fuels results in several hundred times as much CO<sub>2</sub> release as volcanoes each year. Fossil fuel burning results in the emission of ...Learn More >>
How reliable are climate models?
Climate models are tested against what we know happened in the past and they do accurately map past climate changes. Climate models have also been proven to make accurate predictions ...Learn More >>