Climate Change

A scientific look at global change.
Climate Change Evidence At A Glance
Global Surface Temperature
Data source: NOAA
Atmospheric CO2
Data source: NOAA
thousands of years ago
Sea Level
Data source: CLS/Cnes/Legos
Arctic Sea Ice (September)
Surface Temperature CO2 Sea Level Sea Ice
Climate Change News
By Associated Press
June 28, 2015
At least 1,000 people have died in Pakistan in a brutal heat wave.
By Andrea Thompson, Climate Central
June 25, 2015
Using atmospheric data from the last 35 years, a study links extreme heat waves and cold snaps to changing weather patterns.
By Climate Central
June 23, 2015
An interactive map shows the rate at which summers have been warming in every region of the country since 1970.
Feeling Skeptical?
Climate Change Facts
Local Climate Change
Temperature Precipitation Snowfall*

Climate Change Blogs

Pakistan's Deadliest Heat Wave on Record Kills at Least 800
By: Dr. Jeff Masters
Published: June 24, 2015
The death toll from a brutal heat wave in Pakistan rose to 830 on Wednesday, making it Pakistan's deadliest heat wave in recorded history. Most of these deaths--at least 770--occurred in Pakistan's largest city, Karachi. According to statistics from EM-DAT, the International Disaster Database, Pakistan's previous deadliest heat wave was in 1991, when 523 people died.
A New Take on the Human Factor in Recent Extreme Events
By: Dr. Jeff Masters
Published: June 23, 2015
Top researchers differ on how much a changing climate might be involved with jet-stream “weirding.” However, there’s no question that sea levels have risen and global temperatures have warmed. Those unassailable facts may serve as the most direct link between climate change and extreme events, according to an article published on Monday in Nature Climate Change.
The Poor and the Earth Are Crying: The Pope's Encyclical on Climate Change
By: Dr. Jeff Masters
Published: June 18, 2015
"Earth herself, burdened and laid waste, is among the most abandoned and maltreated of our poor; she groans in travail." The Pope weighed in with these words today on the need to address the threat climate change poses to our common home in his third papal encyclical, ”Be Praised."
Wunderground's Climate Change Position
Based on the evidence, more than 97% of climate scientists have concluded that human-caused climate change is happening. Climate change is already causing significant impacts to people and ecosystems, and these impacts will grow much more severe in the coming years. We can choose to take economically sensible steps to lessen the damage of climate change, and the cost of inaction is much higher than the cost of action.
Climate Summary
State of the Climate
Earth has its Warmest May and Warmest Year-to-Date Period on Record

May 2015 was Earth's warmest May since global record keeping began in 1880, said NOAA on Thursday. NASA rated May 2015 as the 2nd warmest May on record. May 2015's warmth makes the year-to-date period (January - May) the warmest such period on record, according to both NOAA and NASA.