Bear Grylls is a British adventurer, writer, television presenter, and former SAS serviceman. He is best known for his television series Man vs. Wild, in which he is dropped into inhospitable locations and must survive using his survival skills. He has also hosted the US version of the show, Running Wild with Bear Grylls, and the British series Mission Survive. He is an advocate for survival and outdoor skills, and has written several books on the subject. He is also an ambassador for The Duke of Edinburgh's Award, and a Chief Scout for the Scout Association in the UK. He is an avid philanthropist, and has raised millions of dollars for various charities.