HealthOur water is full of drugs and we don't know their effects Water reuse means we are all consuming a cocktail of other people's leftover medicines, but measuring their impact is almost impossible. It's time we clean up our act Insight
HealthSpeedy cannabis spit test could spot people driving while high Now that personal use of marijuana has been legalised in many parts of the US, police are looking for ways to stop people driving while high. A 3-minute test could help 51¶¯Âþ