Justin Costa-Roberts

Al Gore, Greenpeace, and the “consensus of scientists” tell us that global warming endangers agriculture and global food security. A study published last week in Science magazine finds global warming has taken significant bites out of potential global corn and wheat production since 1980.

The study also finds, however, that climate change has not adversely affected U.S. corn and wheat production. How so – because of Yankee ingenuity? Not according to the study. The explanation, rather, is that America has been a “notable exception” to climate change. The USA “experienced a slight cooling” during the study period (1980-2008).

This is bizarre. Here we have an alarmist study that finds a “lack of significant climate trends” in the USA for the past 30 years. If true, that makes hash out of all those dire pronouncements by Gore and others that global warming is already contributing to hurricanes, tornadoes, snow storms, forest fires, floods, etc. in the USA. Are the study’s authors aware of this implication? Are the editors of Science? Apparently not.

How do the authors know that climate change is depressing corn and wheat production globally, even if not in the USA? The biggest loss in wheat production, according to the study, is in Russia. Do they adjust Russian crop yields for the Russian economic meltown and financial crisis of the 1990s? As far as I can tell, they don’t. I would not bet the farm on the validity of this study. [click to continue…]