In studies of attractiveness, researchers have found that average faces—those with the most conventional traits—are rated as the most attractive. Such studies often use composite photography, a tool developed in the 19th century by Sir Francis Galton, who believed that he could use composite images to identify "types" by facial appearance. Hypothesizing that certain types have similar facial features, he began creating composite photos of the faces of criminals and vegetarians. What did he find?
Arthur Conan Doyle
Back in the day
At 7:18 AM, an 8.1-magnitude earthquake struck off the coast of the Mexican state of Michoacán, releasing more than 1,000 times the energy of the atomic bomb dropped on Hiroshima. Several hundred miles away in Mexico's capital, Mexico City, the devastation was catastrophic. Official estimates place the death toll at 10,000, but several times that number may have actually perished. Tens of thousands of others were hurt and hundreds of thousands were left homeless. Why was Mexico City so hard hit?
Born on a day like today
Zátopek, the "Czech Locomotive," was a long-distance runner who won three gold medals at the 1952 Summer Olympics in Helsinki. He won gold in the 5,000-m and 10,000-m runs, and he amazingly earned gold yet again after deciding at the last minute to compete in the first marathon of his life. His wife, competing in the javelin toss, added a gold medal to the family collection at the same Olympics. Zátopek's success was likely due to his grueling training methods. What did he wear while training?