Carbon Dioxide milestone: full day at 400 ppm
This is the first time in the human record the carbon dioxide concentration is this high.
This is the first time in the human record the carbon dioxide concentration is this high.
Treatment plants, pumping stations and pipelines were overwhelmed and billions of gallons of untreated sewage flowed into hundreds of rivers, streams, bays, and streets from Virginia to Rhode Island.
Google searches reveal which years have been the worst for allergies in the past decade.
Contiguous U.S. temperatures for 2012 are surpassing the record-warm 1998 on the homestretch.
A new Climate Central animation shows the rapid progression of the U.S. drought over the past few months.