Cyanotype of Ceylonese ferns, 1853.

The Munitions Girls' oil painting, England, 1918.

Lending a helping foot

Global Color Mosaic of Triton

Rice Cultivation in Northwest Italy

Meteor Crater

Plume from Tanzania's Ol Doinyo Lengai Volcano

LMSR 4-6-2 8P Coronation Class No. 46229 'Duchess of Hamilton' - 2009.

Bubbly Little Star

Aletsch Glacier, Switzerland