Man rolls to his death in ski ball

A supposedly thrilling ride down a ski slope inside a giant inflatable ball ended in tragedy for two Russian men inside. One died and the other was badly injured when the transparent plastic ball - called a zorb - veered off course and sailed over a cliff in the Caucasus Mountains of southern Russia. The men's terrifying ride - captured on video - prompted the head of the national emergency rescue services to demand on that Russia address its lax enforcement of safety rules for winter sports, citing a series of accidents over the January holidays. The sport of zorbing originated in the 1990s in New Zealand and is now done around the world. The man who died, 27-year-old Denis Burakov, was with friends at the Dombai ski resort, where they frequently went snowboarding, when he decided to take a ride in a zorb being operated next to a beginners' slope. His friend Vladimir Shcherbakov joined him. An eight-minute video taken on Mr Burakov's phone by one of his friends shows the two men being fitted into harnesses inside the zorb, which consists of two polyurethane balls with a layer of air between them. The zorb is then released to roll down the hill, the two men spinning inside. But...