New research suggests a third runway at Heathrow could cause an extra 100 deaths a year linked to pollution from the airport.
The report, by Cambridge University and the Massachusetts Institute of Technology, shows a plan backed by mayor Boris Johnson for an airport in the Thames Estuary, would cut the number of deaths.
Scientists say the estuary scheme would see a 70% decrease in the number of people dying due to pollution caused by Heathrow.
Piers Hopkirk has our report:
More top news
An action shot of a chameleon as it snares its prey with its extended tongue has scooped top prize in an animal photography competition.
Arnis Zalkalns, a 41-year-old Latvian builder, vanished a week after 14-year-old Alice went missing from her home at Hanwell.
The 14-year-old vanished near her home in west London exactly three weeks ago.