Caption: TRANSPORT. Two aeroplanes flying past each other, leaving vapour trails behind them. CDREF00050 UNEP IMAGES MAY NOT BE USED TO PROMOTE NUCLEAR POWER OR INDUSTRIES OR ORGANIZATIONS WHOSE AIMS THREATEN VULNERABLE COMMUNITIES OR HABITATS. IN ADDITION UNEP IMAGES MAY NOT BE USED TO ADVERTISE THE MANUFACTURE OF ARMS, TOBACCO, ALCOHOLIC DRINKS OR DANGEROUS CHEMICALS.

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