From Frank Olsen:
An article entitled "Global warming crimping crop production" appeared in today's Gazette. I will be writing to Senators Grassley and Harkin, and Rep. Dave Loebsack, urging them to enact legislation to dramatically reduce our country's emissions of carbon dioxide, and ask that you consider doing so as well.
Excerpts from the article from the Gazette follow:
The warming of the Earth has cooled the yields of corn and wheat in much of the world, a new study finds.
Although agricultural advances have pushed global production of staple crops skyward, hotter temperatures in Russia, China, Mexico and elsewhere have stunted that growth and contributed to the long-term rise in food prices, concludes the analysis published Thursday in the journal Science.
"This is tens of billions of dollars a year in lost (agricultural) productivity because of warming," said David Lobell, an Earth scientist at Stanford University and an author on the report.
Three decades of global warming crimped worldwide yields of corn by some 5.5 percent and wheat by some 3.8 percent in recent years.