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2009-04-15 08:45:00

A Duke University professor and his graduate student have discovered a universal principle that unites the curious interplay of light and shadow on the surface of your morning coffee with the way gravity magnifies and distorts light from distant galaxies. They think scientists will be able to use violations of this principle to map unseen clumps of dark matter in the universe. Light rays naturally reflect off a curve like the inside surface of a coffee cup in a curving, ivy leaf pattern that...

2005-09-23 17:35:00

One of the remaining challenges for evolutionary developmental studies of mammals, whose evolution is best known from their teeth, is how their tooth shape is altered during development. Researchers of the University of Helsinki together with their Japanese colleagues from the University of Kioto now propose a 'balance of induction' mechanism directing the placement of tooth shape features called cusps. Position and shape of cusps determine whether a tooth shape belongs to human or mouse, for...


Word of the Day
cacodemon
  • An evil spirit; a devil.
  • A nightmare.
  • In astrology, the twelfth house of a scheme or figure of the heavens: so called from its signifying dreadful things, such as secret enemies, great losses, imprisonment, etc.
'Cacodemon' comes from a Greek term meaning 'evil genius.'
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