What Martin Nweeia noticed first when he encountered narwhals, he says, was the sound. In May 2000, as spring was just reaching Baffin Island in the Canadian Arctic, a famed local hunter took Nweeia out on the ice searching the open water for those tusk-bearing, high-Arctic whales. "I was sitting on a bucket out on the ice doing polar bear watch," he says. At that time of year, daylight lasts...
Ten years ago, computer aficionados had the Internet pretty much to themselves. Today, their electronic playground has become a grand, weird, unpredictable social experiment. About half of U.S. households now have Internet access, although only 5 percent were connected in 1995. Europe and many other parts of the world also contain mushrooming numbers of Net users....