Interlinked , translucent hemispherical pods cover the concourse and other passenger areas -- the light they admit allowing trees and other vegetation to grow within . Airport would sit on artificial Thames island . Comment: Transparent hubs filled with trees would form passenger terminals . Heathrow `` to close '' if project realized .
Airport would sit on artificial Thames island . Comment: Transparent hubs filled with trees would form passenger terminals . Heathrow `` to close '' if project realized .