Cold war spy satellite images used to track ecological change The findings shed new light on wildlife and the natural world after the Second World War Bomb craters converted into fish ponds in Vietnam Credit: Mihai Daniel Nita Cold War spy satellite photos can help tackle climate change, scientists have said. US military intelligence photographs taken over the former Sino-Soviet bloc are being analysed anew for clues about the changing landscape, in research presented at the British Ecological Society's Festival of Ecology. Declassified in 1995 by then-president Clinton, the photographs have been stitched together using state-of-the-art drone image processing software to create a Google Earth-style map.