MORE HEADLINES FROM THE NEW SCIENTIST

• New material may be step towards 3D invisibility cloak
  A prism that bends light the "wrong way" could be the first 3D version of the 'metama..



• Accepted level of earthquake risk in China 'too high'
  The people of Sichuan are now paying the price for living in buildings built to withs..



• Captive cheetahs at risk from their own faeces
  A disease that kills off captive cheetahs by forming clumps in their internal organs ..