TechnologyTexas disaster: What links fertilisers and explosions? One of the most common elements on Earth is used to make both fertilisers and explosives. We explain why nitrogen is the key ingredient ¿ìè¶ÌÊÓÆµ
Impossible chemistry: Having entropy both ways A reaction that went spontaneously in both directions seemed to break one of science's most cherished laws – only a crank would say they'd made it happen Features