P736 CJEFAX 736 Mon 4 Apr 18:15/24        CALLING ALL EARTHLINGS 'Earthlings' a new magazine for young people who care about the environment, is launched on Monday. The magazine will cover topical subjects such as the destruction of the rainforests, endangered species third world problems and pollution. The first issue examines the nature of school playgrounds. Is breaktimj unhealthy for kids' environment? Chris Packham, of the BBC's 'Really Wild Show' walks on the wildsidj in search of foxes.  Environment index 730 Community 700 Nat Trust Read Hear CmntyInfo Religion