Something had gone wrong with the weather. It should have been hot, dry, sunny; instead it rained all the time, there was a dank chill in the air. Thick white mists lay entangled in the tops of the forest trees; the sky was a perpetually steaming cauldron of cloud. The forest creatures were disturbed, and departed from their usual habits. The big cats lost their fear of man, came up to the buildings, prowled round the transmitter; strange unwieldy birds flopped overhead. I got the impression that birds and animals were seeking us out for protection against the unknown danger we had unloosed. The abnormalities in their behaviour seemed ominous.