British explorer Henry Worsley has died while attempting to cross the Antarctic, in an epic charity mission inspired by Ernest Shackleton.The 55-year-old former British Army officer died after being airlifted to a hospital in Punta Arenas, Chile, suffering severe exhaustion and dehydration.The father-of-two was found to have bacterial peritonitis, after having trekked around 913 miles unaided across the South Pole — just 30 miles short of his end goal.Prince William, ...