TechnologyPrizewinning math could reveal hidden patterns in primes A $1 million prize has been awarded for work that keeps the internet secure and could help solve the fiendishly difficult Riemann hypothesis ¿ìè¶ÌÊÓÆµ
EarthLaw enforcement: the elephant in the ivory room The real forces that drive elephant poaching are being obscured by squabbles over whether stockpiled ivory should be sold legally, says Tom MillikenComment