MEPs on the European Parliament's Environment Committee have tabled a motion calling for a ban on trade in blue fin tuna and polar bears.

BBC: Endangered species debate

He also noted in a patent filing that the process allowed the blue-screen procedure to cope with glassware, cigarette smoke, blowing hair and motion blur which had all caused problems for earlier efforts.

BBC: Blue and green-screen effects pioneer Petro Vlahos dies

If they wanted to make Superman appear to be flying, they would film Reeve against blue screens and zoom the camera in and out around him to simulate the actor in motion.

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