You walk by them everyday, but do you know their names? Trees may be a familiar part of your environment, but do you really know a chestnut from a fir or an ash from an elder?
Well here is your chance to find out and help scientists at the Natural History Museum with one of the biggest ever urban tree surveys in the UK.
Trees are essential in urban landscapes, helping to reduce noise and air pollution. But relatively little is known about them. A lot more is known about trees in the British countryside.
With the help of some volunteers, follow Bob Press, Associate Keeper of Botany at the Natural History Museum as they explore a local London park.
More information @ nhm.ac.uk/about-us/news/2010/july/id-your-trees-in-the-urban-tree-survey72714.html