The filmmakers also used infrared cameras to film a dramatic nighttime sequence of 30 lions in Botswana joining forces to attack an elephant.

CNN: 'Earth' takes viewers on 'breathtaking' global journey

If this fantastic simulacra isn?t enough for you, Robot Gunslinger also has ultrasonic hearing and magnified, infrared vision ? demonstrated by the first ever use of computer generated imagery in a film ?

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