A Bedouin man galloping on a horse past the ancient ruins of the Obelisk Tomb, above, and Bab as-Siq Triclinium, below, rock-cut architecture, 1st century AD. Single tree A remote turquoise glacial lake

A remote turquoise glacial lake cradled by snow and ice draped peaks

An American flag patch on the uniform of a US air force Hercules flight crew in the cockpit flying to Antarctica

Great crested grebe in breeding plumage in morning mist

An endangered Mary River turtle

The wolf-like stare of a Siberian Husky sled dog with very blue eyes

A Bedouin man galloping on a horse past the ancient ruins of the Obelisk Tomb, above, and Bab as-Siq Triclinium, below, rock-cut architecture, 1st century AD. Single tree A remote turquoise glacial lakeA Bedouin man galloping on a horse past the ancient ruins of the Obelisk Tomb, above, and Bab as Siq Triclinium, below, rock cut architecture, 1st century AD. Petra, The Lost City of Petra, Jordan