Rudy Turk tugs on his left ear with fingers covered in three shades of acrylic paint — lime green, royal blue and black. "I like strong colors," the 77-year-old says. "I like the Bible. I like stories ...

One or two hundred years from now, some writer will produce a study of the mania that overcame stock traders in the 1990s, when ignorance of the true capabilities of Internet technology led to wild ...