Denver\'s legalization of recreational use of marijuana in January 2014,could be the downfall of the city\'s gang-banger dealers who have seen falling profits since medical marijuana became legal in 2001.

Clips reveal that kayaking down rapids, scaling tall buildings and pulling handbrake turns can all have dangerous or humiliating consequences. Richard Hammond investigates why.

August 31, 1986: Aeroméxico Flight 498 is descending into Los Angeles International Airport (LAX) for landing. Meanwhile, a private Piper Cherokee owned by the Kramer family takes-off from an airfield in nearby Torrance. They unwittingly enter LAX airspace but the air traffic controller doesn\'t notice it due to a distraction by a Grumman Tiger Flight 66R on the screen. Suddenly over the residential district of Cerritos, the Kramers\' plane smashes into Flight 498\'s horizontal stabilizer, shearing off the top of the cockpit of the private plane and snapping half of the tail off from Flight 498. The Kramers die as a result of the impact. The badly damaged DC-9 flips inverted and plummets into the houses below. Everyone on board dies plus 15 people on the ground. The private plane falls out of the sky and crashes into a school playground.

Alternate title: \"6 Mile Plunge\" February 19, 1985: China Airlines Flight 006 collides with a jet stream while flying to Los Angeles. The no. 4 engine fails and the pilots try to restart the engine at a much too high altitude. The plane banks slowly to the right but the pilot expects the autopilot to steady the plane. The plane slows down and stalls, sending the passengers and crew into a spiraling nosedive. The sudden actions put everyone under incredible G-forces. The Flight Engineer mistakes readings on the gauges for total engine failures on all engines rather than the Captain putting the throttle to idle. The speed increases and the plane pulls out of the dive but stalls again and falls. The extreme forces rip the undercarriage doors off and pieces of the stabilizers rip off as well. The Boeing 747SP clears the clouds and the pilot sees the horizon. The plane is pulled from the dive, pinning the passengers to their seats. The pilot lands safely at San Francisco despite having trouble with the elevators. 2 people are hurt, but everyone is alive.