Monday, August 23, 2010

How Will Climate Change Impact Bread? Part 2: "Scientific" American Podcast
Climate change may have begun to hit humans where it hurts—in the stomach. Research has shown how changing temperatures have influenced wheat yields in Montana over the last 60 years. And now catastrophic fires sweeping Russia give a taste of what climate change may bring to that bread basket.
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But climate change means that the risk of such fires—and the catastrophic floods that have affected 20 million people in Pakistan—continues to increase.
Flashback: Crops under stress as temperatures fall - Telegraph
It is now more than 200 years since the great astronomer William Herschel observed a correlation between wheat prices and sunspots. When the latter were few in number, he noted, the climate turned colder and drier, crop yields fell and wheat prices rose. In the past two years, sunspot activity has dropped to its lowest point for a century. One of our biggest worries is that our politicians are so fixated on the idea that CO2 is causing global warming that most of them haven't noticed that the problem may be that the world is not warming but cooling, with all the implications that has for whether we get enough to eat.
Flashback: Solar Sun Spot Cycles Impact on Crop Yields, Energy Use and Weather Patterns
These historical periods of solar inactivity – dubbed the Maunder Minimum and Dalton Minimum after the astrologists who studied them - coincided with an irregular periods of rapid climate shifts. The climate cycles brought intensely cold winters, although periodically intense summer heat waves would also appear. The Maunder cycle is often referred to as the "Little Ice Age" – but climate experts claim the period is punctuated by both cold weather and rapid climate shifts.

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