Christophe Courteau / Men watching 'Zangbeto', traditional voodoo guardians of the night in the Yoruba religion, are helped in to boat to journey to another village for Voodoo / Vodun ceremony, Benin, February 2011.

Christophe Courteau / 'Zangbeto' traditional voodoo guardians of the night in the Yoruba religion, at Voodoo / Vodun ceremony, Benin, February 2011.

Christophe Courteau / 'Zangbeto' traditional voodoo guardians of the night in the Yoruba religion of Benin and Togo, at Voodoo / Vodun ceremony, Benin, February 2011.

Murray Cooper / Tawny-bellied Hermit (Phaethornis syrmatophorus) hummingbird feeding on flower, multi-flash image

Michael Durham / Western Small-footed Myotis (Myotis ciliolabrum) bat launching into flight from a basalt rock, Dutch Henry Falls Preserve, central Washington

Yva Momatiuk & John Eastcott / Fluted Wall formation of multi-hued sandstone layers shaped by erosion, Capitol Reef National Park, Utah

Scott Leslie / Blue Jay (Cyanocitta cristata) with nut taking off, Granville Beach, Nova Scotia, Canada

Tui De Roy / Southern Royal Albatross (Diomedea epomophora) gamming group courting as part of multi-year mate selection, Moubrey Ridge, Campbell Island, New Zealand

Tui De Roy / Southern Royal Albatross (Diomedea epomophora) gamming group courting as part of multi-year mate selection, Enderby Island, Auckland Group, New Zealand

Tui De Roy / Southern Royal Albatross (Diomedea epomophora) gamming group courting as part of multi-year mate selection, Moubrey Ridge, Campbell Island, New Zealand

Jim Brandenburg / Bamboo (Dendrocalamus sp) growth time exposures taken hourly, China

Jim Brandenburg / Bamboo (Dendrocalamus sp) growth time exposures taken hourly, China