Back in 2008, climate change was a hot topic for U.S. agriculture with both presidential candidates having proactive plans to address greenhouse gases and climate change. Now the EPA is proposing to lower the ozone standard to between 65-70 parts per billion (ppb).Back in 2008, climate change was a hot topic for U.S. agriculture. Carbon and greenhouse gases were in the news every day as were several proposals for regulating their emissions. The two presidential candidates, Democrat Barrack Obama and Republican John McCain, both had proactive plans to address greenhouse gases and climate change. Agriculture was actively involved in trying to turn "lemons into lemonade" (as the saying goes) by fixating on the carbon sinking qualities of farml...