It was a grey June morning in 1870 when a solitary hearse slipped unnoticed through the streets of London. Few would have suspected that...

Long before the age of biometric passports and full-body scanners, some travellers took a more... unconventional route to their destination. Like stowaways on ships, trains, and even aeroplanes, a very particular group of people, fewer than you'd think, but more than you'd expect, have attempted, and occasionally succeeded, in mailing themselves as freight. While undoubtedly illegal, highly dangerous, and never encouraged by any reputable postal service, the practice of self-

Jonas Salk developed the first safe polio vaccine in 1955 and then refused to patent it. Here's the full story of the man who helped wipe out one of history's most feared diseases.