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Empty space full of theories
Nobel laureate Frank Wilczek shows just how strange the universe
is, writes
Dick Ahlstrom p
When energy dip meets global warming
The world's energy supplies are on a collision course with global warming and the resultant crash will not be pretty. p
'Thrifty genes' blamed as obesity rivals hunger
Under the Microscope: There are now more overweight people than hungry people in rapidly developing countries. This rather surprising fact is reported by Barry M Popkin in the September 2007 issue of Scientific American, writes Prof William Reville p
