London puts a price on pollution as it expands its ultra low emission zone

<p>From the BBC World Service: London has today expanded its ultra-low emission zone (ULEZ), which is designed to clean up air quality in the British capital. The BBC&#8217;s Olie D&#8217;Albertanson explains the financial knock-on effect for those living and working there. We also hear from Frank Levin, a former U.S. under-secretary of commerce for international trade, on the efforts being made to restore relationships with China. Lastly, the BBC&#8217;s João da Silva reports on concerns over gas price rises, with workers at two large liquefied natural gas plants in Australia going on strike in a week.</p>