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Hot and Getting Hotter: Heat Islands Cooking U.S. Cities

Hot and Getting Hotter: Heat Islands Cooking U.S. Cities

Cites are almost always hotter than the surrounding rural area but global warming takes that heat and makes it worse. In the future, this combination of urbanization and climate change could raise urban temperatures to levels that threaten human health, strain energy resources, and compromise economic productivity. Summers in the U.S. have been … Read More

July Checks In as 4th Warmest on Record Worldwide

July Checks In as 4th Warmest on Record Worldwide

New National Climatic Data Center (NCDC) data show that last month was the fourth-warmest July on record worldwide, even though two giant cool spots in the Northern Hemisphere — one over Siberia and the other over the U.S. Midwest — made it easy for people living there to think that summer 2014 has been a mild one.… Read More

Ongoing Coverage of Historic Drought in U.S.

Ongoing Coverage of Historic Drought in U.S.

After a warm and dry spring and a scorchingly hot start to the summer, the U.S. is in the grips of one of its top 10 worst drought events on record. The drought extends from Delaware to California, with the most intense drought conditions centered in the nation's heartland. Corn growers and ranchers have been hard-hit this year, prompting fears of … Read More

California Has Hottest Start to Year While Midwest Chills

California Has Hottest Start to Year While Midwest Chills

The heat records keep falling for California. The state has had its hottest first seven months of the year, crushing the previous mark. Neighboring states have also baked, though not quite at record levels, helping contribute to both the spread of drought and large wildfires. At the same time, cool weather had a number of Midwest states … Read More

87 Cities, 4 Scenarios and 1 Really Hot Future

87 Cities, 4 Scenarios and 1 Really Hot Future

Global temperatures are rising, but nothing brings global warming home to people like a really hot summer day — those few days a year when it actually feels like the planet is boiling over. But what if those rare sweltering days, over 90° or 100°F, were not so rare and began to dominate summers? That could happen if carbon emissions continue … Read More

Has Your City Reached its Peak Heat Yet?

Has Your City Reached its Peak Heat Yet?

Statistically, the hottest time of year in the continental U.S. comes in mid-July, a few weeks after the sun reaches its highest point in the sky on the summer solstice. This year the solstice was on June 21. But that mid-July peak heat is just a national average: if you look at smaller regions, the peak temperature might come earlier (that’s true… Read More

6 Degrees: Arctic Sea Ice Is Melting, but East Coast Isn’t

6 Degrees: Arctic Sea Ice Is Melting, but East Coast Isn’t

Review of top climate news, from the state of Arctic summer sea ice melt to the cost of delayed action on climate. … Read More

Blistering Future Summers for 1,001 U.S. Cities

Blistering Future Summers for 1,001 U.S. Cities

During these dog days of summer, air conditioning and splash parks can help beat the heat, but climate change is making it harder to avoid simmering temperatures. Summers in most of the U.S. are already warmer than they were in the 1970s. And climate models tell us that summers are going to keep warming as greenhouse gas emissions continue. What … Read More