A woman throws rice up into the air with her feet while fanning air through it to clear away the lighter chaff, Chittagong Hill Tracts, Bangladesh, Asia

South polar skua (Catharacta maccormicki) on snow, much lighter plumage cf to Brown skua, Ross Sea, Antarctica, Southern Ocean

Basket Star fish (Astrophyton muricatum) Deep red coloured adult on lighter seafan, Honduras, Caribbean.

South polar skua (Catharacta maccormicki) chick about to fledge, will have much lighter plumage cf to Brown skua, Ross Sea, Antarctica, Southern Ocean

Southern giant petrel (Macronectes giganteus) in flight (lighter phase shown here) in the Drake Passage, Southern Ocean

Purse, wallet, gun and accessories on blue background

Caucasian man lighting cigarette at waterfront

Spring, day, view at Koenigswinter with Schloss Drachenburg (castle) and Drachenfels, Siebengebirge, Rhine, North Rhine- Westfalia, Germany, Europe

Oberhausen Gasometer with river Rhine-Herne-Canal and lighter, Oberhausen - Neue Mitte, Ruhrgebiet, North Rhine-Westphalia, Germany, Europe

Bank of the river Rhine at Duisburg-Ruhrort, Ruhrgebiet, North Rhine-Westphalia, Germany, Europe

View of Rhine and Sachtleben chemistry works, Duisburg-Homberg, NRW, Germany

Row of houses on the bank of the river Rhine at Laar, in front of ThyssenKrupp steel works Meiderich/Beek, Duisburg, NRW, Germany

Row of houses on the bank of the river Rhine at Laar, in front of ThyssenKrupp steel works Meiderich/Beek, Duisburg, NRW, Germany

Ships and boats on the Mekong river, Vietnam

Ships and boats on the Mekong river, Vietnam

Ships and boats on the Mekong river, Vietnam

A leaf in autumn suspended in air, sunlit with a lighter edge, Wasatch national forest, Utah, USA

Citadel of Vauban classified UNESCO World Heritage Site, Besançon, Doubs, France