TechnologyGreen machine: Bacteria will keep CO2 safely buried Sequestering the carbon from fossil-fuel power stations can cut emissions – and there's a new recipe to keep it locked away underground ¿ìè¶ÌÊÓÆµ
TechnologyCan we keep tabs on stockpiles of nuclear fuel? To keep fissile materials from falling into the wrong hands, governments need to turn to safer reactor fuels and smarter detection technology ¿ìè¶ÌÊÓÆµ