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Flat Lick Falls in Jackson County, Kentucky. This spot is located in a county proclaimed in a study by a professor of Eastern Kentucky University as the worst place to live in Kentucky. He rated the livability of Kentucky's 120 counties.

Hand-colored scanning electron micrograph of a grain of pollen found in a household dust ball, magnified 2,400 times.

Hand-colored scanning electron micrograph of a dust mite hunting for a skin scale dinner in a household dust ball, magnified 447 times.

The hamlyn's white T stands out in the African forest's dim light.

Head nestled in its feathers, a slumbering flamingo resembles an abstract sculpture,

Scalloped surf and a ragged precipice frame harbor seals on the sands of secluded cove at Point Reyes along California's northern coast.

Fall migration of reindeer from summer islands to mainland.

Diving biologist swims beneath six feet of ice, McMurdo Sound, Antarctica.

A grasshopper hitches a ride with a chameleon across a hot road.

The San Andreas Fault rips the skin of the Carrizo Plain in southern California.