This frightening picture of two brothers with their hair on end was snapped just minutes before they were struck by lightning at Moro Rock, California, leaving the younger boy with third-degree burns and another man dead. Electrical charges in the atmosphere just before a strike can lift hair into the air, providing nature's last warning of a bolt from the blue.These boys, 18 and 12, didn't know that, and the image has spread rapidly across the web this month. The story behind the classic 1975 picture has come to light on the blog of Michael McQuilken, the teenager on the...