ENGLAND: From 1822 to 1854, more than 40,000 bodies—victims of poor hygiene and disease outbreaks—were buried on the grounds of St. Pancras Church in London. During recent high-speed rail work, almost 1,400 sets of remains were exhumed and reburied. In one coffin there were bones from at least eight people, as well as an odd surprise: eight bone fragments from a Pacific walrus. Cut marks suggest that medical students may have been using bones from a 13-foot-long, 3,000-pound pinniped for dissection and surgery practice. —Samir S. Patel