Bodleian Library, University of Oxford, England (© Andrew Holt/Getty Images)

Prayer flags in Phobjikha Valley, Bhutan (© John Warburton-Lee/DanitaDelimont.com)

Red fox sleeping in the snow, Abruzzo, Italy (© marco vancini/500px/Getty Images)

Fireworks over Phra Nakhon Khiri, Phetchaburi, Thailand (© noomcpk/Shutterstock)

Daiichi Tadami River Bridge, Fukushima prefecture, Japan (© DoctorEgg/Getty Images)

Oud-West, Amsterdam, Netherlands (© George Pachantouris/Getty Images)

Humpback whale, Disko Bay, Greenland (© Paul Souders/DanitaDelimont.com)

Kirkjufell, Snæfellsnes peninsula, Iceland (© Ratnakorn Piyasirisorost/Getty Images)

Winter sunrise in Dedham, Colchester, England (© George W Johnson/Getty Images)

Caribou running in snow, Alaska (© Michael Quinton/Minden Pictures)