Doctors are warning that laptop computers may inflict a burn even through clothed skin, after the bizarre case of a Swedish scientist who scorched his penis and testicles while writing a report in his armchair. The unnamed 50-year-old father of two had balanced the computer on his lap while he wrote the report at home, taking about an hour to do it, according to a letter published in the next issue of the British medical weekly The Lancet. The following day, he started to develop painful blisters on his foreskin and scrotum, which became infected but eventually cleared up without...