steam

A double Fordson tractor at the Great Dorset Steam Fair, where hundreds of period steam traction engines and heavy mechanical equipment are being set up for the annual Dorset gathering of steam enthusiasts. PRESS ASSOCIATION Photo. Picture date: Tuesday August, 26, 2014.

Ben Birchall/PA

A double Fordson tractor at the Great Dorset Steam Fair, where hundreds of period steam traction engines and heavy mechanical equipment are being set up for the annual Dorset gathering of steam enthusiasts.

Steam from the Verso paper mill is backlit by the light of the setting moon in this time-exposure, Friday, Sept. 20, 2013, in Bucksport, Maine. Verso makes coated papers used by publications such as catalogs and magazines.

Robert F. Bukaty/AP

Steam from the Verso paper mill is backlit by the light of the setting moon in this time-exposure on Friday in Bucksport, Maine. Verso makes coated papers used by publications such as catalogs and magazines.