The body of a suspected stowaway was found atop an office building in West London on Thursday, and is believed to have plunged around 1,400ft from a Boeing 747 as it approached Heathrow Airport. Meanwhile, another man is in critical condition in hospital after being discovered an hour earlier in the undercarriage of the aircraft — British police are investigating both incidents. The survivor is believed to have climbed aboard the British Airways plane at OR Tambo International airport in Johannesburg before traveling over 8,000 miles from South Africa, largely in temperatures as low as -81 Fahrenheit on the 10-hour...