Evolution photos

Evolution photos

Evolution photos

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Giant sequoia grove

Giant sequoia grove

Annular eclipse May 2012

Annular eclipse May 2012

Saguaro flowers

Saguaro flowers

Saguaro in the shade

Saguaro in the shade

Dune flowers in California

Dune flowers in California

Trees resprout after forest fire in Oklahoma

Trees resprout after forest fire in Oklahoma

Phacelias grow abundantly after fire

Phacelias grow abundantly after fire

Phacelia strictiflora

Phacelia strictiflora

Honey locust spines

Honey locust spines

Cyanobacteria inside crystals

Cyanobacteria inside crystals

Black locust in bloom

Black locust in bloom

Flowers of Catalpa bignonioides

Flowers of Catalpa bignonioides

Male cottonwood flowers

Male cottonwood flowers

Female bois-d'arc flowers

Female bois-d'arc flowers

Leaves of mature vs. juvenile mulberry

Leaves of mature vs. juvenile mulberry

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Trees resprout after forest fire in Oklahoma

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Trees resprout after forest fire in Oklahoma

A black oak (Quercus velutina) sprouts in 2012 after a 2011 fire in a cross timbers forest in Oklahoma. Photo by Stanley Rice.