'Green' lamp posts tackling air pollution in London environmental experiment

Lamp posts in London's upmarket Belgravia neighbourhood have been 'greened', to combat air pollution.

The street lamps have been clad in plants known to filter air pollution. Small solar panels in the columns power water pumps to feed the plans, while insect boxes encourage biodiversity.

It is part of a year-long experiment by the University of Greenwich. If successful, the idea could be rolled out more widely.