Today's threats of legal action by ClientEarth against the UK Government highlight the problem of London's poisonous air, which is killing some 10,000 people a year, writes John Weeks. Fortunately there are simple, low cost, effective measures that could be taken to bring about big improvements to the city's air quality, fast.
If the world's leaders really cared about climate change, there's one easy way to reduce emissions, writes John Weeks - drop the obsession with increasing trade, and all the pollution that goes with it. A world based on local production, consumption and finance will be a better one for people and the environment.