wind power is key to efforts to produce clean, limitless energy and to slow global warming. it's one of the world's fastest-growing energy industries. but there is mounting evidence that expanding "wind farms" are taking a toll on airborne wildlife. thousands of birds and bats are killed every year by collisions with the the wind towers and their giant blades. environmental activists are taking the wind energy industry to court to find a solution.
estimates by the department of energy indicate that in the united states alone, there will be more than 100,000 wind turbines by 2030.
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