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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Male cottonwood flowers

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Male cottonwood flowers

A male catkin of Populus deltoides near Tulsa, Oklahoma in March 2012. Photo by Stanley Rice.