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Test allows doctors to see disease without microscope

Scientists in Britain say they have developed a super-sensitive test using nano-particles to spot markers for cancer or the AIDS virus in human blood serum using the naked eye. As it does not need sophisticated equipment, the test-tube technique should be cheap and simple, making it a a boon for…

The perfect crime tool: Researchers work on ‘event cloak’

PARIS — Jewelry robbers, magicians, exam cheats and practical jokers everywhere will have an interest in an offbeat idea launched by physicists on Tuesday: to make the passage of time invisible. The scientists have conceived of a “spacetime cloak” which manipulates light and, in essence, conceals whole events from a…