Channel 4 is preparing to air a new documentary following renowned journalist Jon Snow as he comes to terms with his recent Alzheimer's diagnosis while undertaking one final investigative assignment. The documentary offers an intimate glimpse into the life of one of Britain's most esteemed broadcasters as he faces his life-changing diagnosis . Together with his wife, Dr Precious Lunga, Snow tackles his Alzheimer's diagnosis with typical honesty, leveraging his profile to transform public