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(Photograph) - Francis Crick is about to turn 80, but the Nobel laureate is not a man to rest on past glories. In an exclusive interview with Kam Patel on page 15, he describes his latest research into that most fundamental of scientific puzzles Q the origin and nature of consciousness. If the question itself is difficult, he says, some of the ideas people are putting forward in an attempt to answer it are exasperating.