Cousteau country: scuba diving in Papua New Guinea

With a new film about Jacques Cousteau set to be released, the Walindi Plantation Resort, the dive centre and research institute he inspired, is still the first word in marine conservation. Plus five more Cousteau divespots

How to hike the Grand Canyon

Our writer tackles the 23-mile Rim-to-Rim trail in a single, muscle-grinding day, but offers tips for walking the route at a gentler pace