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
March 17, 2015
Vanuatu's president is blaming the citizens of Earth for the strength of Cyclone Pam, which devastated the island nation less than a week ago.
By Chris Dolce
March 12, 2015
See what countries have the most cities at risk.
By Zain Haidar
March 9, 2015
A solar-powered plane took off from Abu Dhabi Monday in an attempt to make a historic global journey without fossil fuel.
Feeling Skeptical?
Climate Change Facts
Local Climate Change
Temperature Precipitation Snowfall*

Climate Change Blogs

Let’s call it: 30 years of above average temperatures means the climate has changed
By: Dr. Ricky Rood
Published: February 27, 2015
Those who are under 30 years old have not experienced the climate I grew up with. In thirty more years, those born today will also be living in a climate that, by fundamental measures, will be different than the climate of their birth. Future success will rely on understanding that the climate in which we are all now living is changing and will continue to change with accumulating consequences.
Are We Entering a New Period of Rapid Global Warming?
By: Dr. Jeff Masters
Published: February 24, 2015
Residents of New England may understandably look back at 2015 as the year of their never-ending winter. For the planet as a whole, though, this year could stand out most for putting to rest the “hiatus”— the 15-year slowdown in atmospheric warming that gained intense scrutiny by pundits, scientists, and the public. The slowdown was preceded by almost 20 years of dramatic global temperature rise, and there are signs that another decade-plus period of intensified warming may be at our doorstep.
New England Intense Hurricanes Much More Numerous 340 to 1800 Years Ago
By: Dr. Jeff Masters
Published: February 17, 2015
Numerous Category 3 and 4 hurricanes frequently pounded New England during the first millennium, from the peak of the Roman Empire into the height of the Middle Ages, according to a new study. Lead author Jeff Donnelly said, “We hope this study broadens our sense of what is possible and what we should expect in a warmer climate. We may need to begin planning for a category 3 hurricane landfall every decade or so rather than every 100 or 200 years.”
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 2nd Warmest February and Warmest Northern Hemisphere Winter

February 2015 was the second warmest February since global record keeping began in 1880, said NOAA and NASA. February 2015's near-record warmth continues a trend of very warm months for the planet--2014 was Earth's warmest calendar year on record, the period spanning the Northern Hemisphere winter (December 2014 - February 2015) was the warmest such period on record, and the past twelve months have been the warmest 12-month period in recorded history.