A woolly mammoth skeleton is seen on display at the Venetian Resort Hotel Casino in Las Vegas in September 2009. Instead of Jurassic Park, try Pleistocene Park. A team of scientists from Japan, Russia and the United States hopes to clone a mammoth, a symbol of Earth’s ice age that ended 12,000 years ago, according to a report in Japan’s Yomiuri Shimbun. The researchers say they hope to produce...