Could lessons in risk help? Every year – particularly in hot weather – teenagers drown in Britain’s waterways. Experts say that the time has come to take urgent action.
The hidden epidemic killing teenage boys

Glossary
RNLI - The Royal National Lifeboat Institution. A UK and Ireland charity that operates lifeboats.
Mount Everest - The world's tallest mountain, which straddles the borders of Nepal and China. Temperatures can drop to -60C. The first known people to climb the mountain were New Zealand's Edmund Hillary and the Sherpa, Tenzing Norgay.