PETER MENZEL / SCIENCE PHOTO LIBRARY PETER MENZEL / SCIENCE PHOTO LIBRARY
Nuclear winter test fire. Bushfire deliberately started in order to simulate a nuclear winter. The smoke from these fires is partly obscuring the Sun. The nuclear winter theory predicts that smoke from fires burning after a nuclear war would block sunlight, causing a rapid drop in temperature. This temperature drop would cause a series of harsh frosts that would contribute to the death of much of Earth's animal life and vegetation. The test burn took place in December 1986 on 500 acres of brush in Lodi Canyon, Los Angeles, California, USA.
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