TechnologyULEZ: London is cleaning up its dirty air but what about other cities? London's Ultra Low Emission Zone, introduced this week, is targeting drivers of diesel cars in an effort to protect people's health. If it succeeds, the rest of the UK could do the same Analysis
EnvironmentDolphins unintentionally poisoning offspring with banned chemicals Toxins called PCBs were banned in the 1980s, but they persist in the environment where they collect and concentrate in dolphin blubber – and in dolphin milk 51¶¯Âþ