DOUGLAS FARMER, SENIOR EDITOR [email protected]Juvenile salmon traveling in the Columbia River near McNary Dam in Oregon are vulnerable to hungry birds that lurk overhead. Thanks to the Walla Walla District of the Army Corps of Engineers, which deployed lasers in the area, the endangered fish are now protected from above as well as in the water. McNary Dam, maintained by the Corps, stretches 1.4 miles and spans the Columbia River between Umatilla County, Ore., and Benton County, Wash. Lasers installed by the Army Corps of Engineers deter birds from feasting on juvenile salmon at McNary Dam in Oregon. Courtesy of Caleb...Read full articleRelated content from Photonics MediaARTICLESResearchers become less blind about batsContrary to the popular belief and saying that a person can be “as blind as a bat,” bats themselves are not actually blind. 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