• The radon concentration in the average UK home is about 20 becquerels per cubic metre.

    BBC: Radon

  • Action to deal with the problem is recommended when the concentration reaches 200 becquerels per cubic metre.

    BBC: Radon

  • The limit, set by the European Union, is 40 micrograms of NO2 per cubic metre of air.

    BBC: Dundee Biomass Centre

  • Anchor Hill was found to have a reading of 47.7 micrograms per cubic metre, with the government's objective level being 40 micrograms.

    BBC: Air pollutants in Woking above government target levels

  • On April 21st the CAA established a new rule, deeming regions thought to have less than 2, 000 micrograms of dust per cubic metre safe for flight.

    ECONOMIST: Volcanoes and air travel: Small eruption in Iceland | The

  • They were part of a group of 15 locations that failed to meet the EU and UK standard of 40 micrograms per cubic metre of nitrogen dioxide.

    BBC: Traffic

  • In Beijing, water rates for home use start at just one yuan (about 12 cents) per cubic metre, far below cost, with heavy users paying a bit more.

    ECONOMIST: China

  • However, a recent review of evidence carried out by WHO found there were now concerns about a health impact at levels much lower than 10 microgrammes per cubic metre.

    BBC: Dust from recycling plants 'puts residents at risk'

  • Xinhua says that readings in Beijing for the tiniest pollution particles - called PM2.5 - reached more than 400 microgrammes per cubic metre on Thursday, which is considered "dangerous".

    BBC: Smog and sandstorm engulf China's capital

  • One study by the American Cancer Society found that death rates from lung cancer increased 6% for every additional 10 microgrammes of fine particles in a cubic metre of air.

    BBC: Traffic

  • Its guidelines say average concentrations of the tiniest pollution particles - called PM2.5 - should be no more than 10 microgrammes per cubic metre but UK standards allow up to 25.

    BBC: Dust from recycling plants 'puts residents at risk'

  • The Wendelstein 7-AS, a tiddler with a fuel capacity of but a single cubic metre, was built by the Max Planck Institute for Plasma Physics at Garching, Germany, and operated from 1988 to 2002.

    ECONOMIST: Fusion power

  • Levels found by the Health Protection Agency in the vicinity of the Plevins plant were recorded at 8.2 microgrammes per cubic metre while levels outside Armstrongs were 8.8 - both well within the acceptable levels.

    BBC: Dust from recycling plants 'puts residents at risk'

  • And the construction of a 76, 000 cubic metre (2.7m cubic feet) flood storage basin upstream of the town, to hold back flood waters and reduce the risk of the culverts overflowing, as well as the wildlife area being developed.

    BBC: Flood alleviation scheme complete in Penrith

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