Deep in the wilds of Alaska lies the Turnagain Arm – aka “one of the world’s biggest bore tides.” It’s a waterway, not too far from Anchorage, naturally constructed between two snow-coated slopes, ...

Crowds gathered along the Qiantang river in Hangzhou, China, on 27 July to watch the “Silver Dragon” pass. This is no fire-breathing monster, though, but a tidal bore, a phenomenon where a tidal wave ...