Teske said he sees the impact of climate change on his farm and has worked on the issue as president of the Kansas Farmers Union. He worries about what’s been reported for years – that the Corn Belt is moving northeast because of hotter weather. He gave up growing corn two years ago, switching to sorghum, which is more drought tolerant, so more profitable. “The frequency and intensity of the heat waves in the summers are expected to increase by mid-century,” explained Jim Angel, the Illinois state climatologist and lead author of the chapter on the Midwest in the national climate change study. “And I have to keep reminding myself that when I say mid-century, that's not that far off.”The report predicts that heat and poor air quality will take a toll on livestock and rising humidity will make it harder to grow crops, so yields will be reduced. But farmer Blake Hurst said he has a hard time believing that.“We've had six years in a row above-trend corn yields in the Midwest,” Hurst said. “That's never happened before.” Hurst, president of the Missouri Farm Bureau, lives about 100 miles east of Teske. Hurst’s reaction to climate change is different – he wonders if lowering carbon emissions is worth the economic cost.Hurst said there are always bad weather years, but farmers manage, in part because technology has improved seeds, which also means it costs a lot more than when he started farming in 1978.