Tornadoes are some of the most destructive forces of nature. Learn how tornadoes form, how they are rated, and the country where the most intense tornadoes occur.
An international team of scientists and explorers, lead によって Dr Julian Bayliss, go on an extraordinary mission in Mozambique to reach a forest that no human has set foot in.
Abandoned houses hide beneath blankets of vines in the former fishing village of Houtouwan, on Shengshan, one of hundreds of islands in China's Hangzhou Bay.
