title: Megacity project seeks to gauge urban pollution.
authors.forename: Declan
authors.initials: D
authors.lastname: Butler
mesh_terms: D000397:Air Pollution / Q000706:statistics & numerical data*; D002947:Cities / Q000706:statistics & numerical data*; D002958:City Planning / Q000639:trends; D002980:Climate; D003625:Data Collection / Q000191:economics; D016208:Databases, Factual; D005060:Europe; D008962:Models, Theoretical; D011156:Population Density