An arid gorge where the ancient remains of human ancestors have been found during archaeological excavations. Descend

An arid gorge where the ancient remains of human ancestors have been found during archaeological excavations. DescendAn arid gorge where the ancient remains of human ancestors have been found during archaeological excavations. Olduvai Gorge, Ngorongoro Conservation Area, Serengeti Plains, Arusha District, Tanzania.

A rack of microcentrifuge tubes contain protein or bacterial samples

A ray of sunshine pierces the darkness and illuminate a banana leaf

An cautious Zanzibar Red Colobus peering from the canopy of a Coral Rag Forest

father or brother

chewing alpine grasses

Student benches in a classroom where prisoners were taught lessons

A Spinifex Pigeon on the ground with beautiful feather markings Kings Canyon Watarrka National Park

A bronze monument commemorates Marine Corp veterans of World War 2

Colorful prayer flags on the mountain path to a Buddhist monastery in the Himalaya

A pair of enormous East African Land Snails mating on the forest floor

Artificial lighting illuminates a stone wall and Merbau timber steps

A flock of Wilsons Storm Petrels feeding on the ocean surface Woollongong