During the wind turbine boom, bat deaths have escalated and will continue barring remedies that can save bats' lives. The deaths aren't from bats flying into turbine blades; rather, they die from lung hemorrhages caused by enduring a huge drop in air pressure as they fly past the blades.
The deaths are a growing concern for farmers, who appreciate bats for their ability to snarf up thousands of insects, many of them harmful to crops, saving North American farmers a whopping $3.7 billion a year in annual losses.
One potential remedy: Fitting the wind turbine towers with sound devices that emit a high-frequency pitch only bats can hear, helping them avoid the blades.
As seen in the Kiplinger Agricultural Letter
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