Description: At a September 27, 1931, symposium about the evolution of the universe, Watson Davis photographed astronomer Abbé Georges Henri Joseph Édouard Lemaître, physicist Sir Oliver Lodge, astrophysicist Edward Arthur Milne, and Anglican bishop and mathematician Ernest William Barnes.
Description: [caption id="" align="aligncenter" width="400" caption=""Backscatter" x-ray scan, courtesy of Flickr user publik16, Creative Commons: Attribution 2.0."][/caption] Following the Christmas Day capture of a passenger, dubbed “The Underwear Bomber,” who attempted to blow up an American airliner, controversy swirls around the use and efficacy of full body scanners and the fate of