Toxic fumes on planes are poisoning pilots and rendering them unable to fly safely. NewScientist reports that British pilots are campaigning for “aerotoxic syndrome” to be recognized as a disease, while two official investigations examine whether highly toxic fuel contaminants are leaking into cabin air supply on commercial airliners in flight, exposing passengers, pilots and cabin crew. The UK government will fit air-monitoring equipment aboard aircraft, and 1500 pilots will take part in the first major health study designed to establish the extent of the problem.–JULIA WHITTY