Welcome to Clean Start, ThinkProgress Green’s morning round-up of the latest in climate and clean energy. Here is what we’re reading. What are you?

Corn, soybean and spring-wheat harvests in the U.S., the world’s largest exporter, will be smaller than the government forecast last month after a damaging heat wave that may signal higher costs for food and biofuel. [Bloomberg]
The North Carolina Drought Management Advisory Council said Thursday that 91 of the state’s 100 counties are experiencing some type of drier than usual conditions, with the most severe problem in eastern North Carolina. [AP]
Climate deniers can finally get excited about the 2012 election: Rick Perry, their candidate of choice, is about to officially throw his hat in the ring. [Grist]
The Obama administration is overstating the need and benefit of rules to cut national smog pollution, according to a study released by the American Petroleum Institute, the largest U.S. oil and gas lobby group. [Bloomberg]
According to new research from MIT, the most recent global climate report fails to capture trends in Arctic sea-ice thinning and drift, and in some cases substantially underestimates these trends. [MIT]
This summer’s heat wave is wreaking havoc on virtually all aspects of life in Dallas, which has had 40 straight days of grueling 100-plus degree temperatures, with no end in sight. [CNN]
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