Woman grinding argan seeds to get oil, Saadia family, Tagante village, Anti-Atlas, Morocco

Santa Laura Salpeter mine, UNESCO World Heritage Site, Atacama desert, Chile, South America

A view of the industrial and militarized Russian seaport city of Murmansk on the northern shore of the Kola Peninsula, Murmansk Oblast, Russia, Arctic, Europe

Pygmy woman extracting water from a tree branch, Dzanga Sangha National Park, UNESCO, Central African Republic

Model of an offshore oil rig, Petroleum Museum, Stavanger (European Capital of Culture 2008), Norway, Europe

Model of an offshore oil rig, Petroleum Museum, Stavanger (European Capital of Culture 2008), Norway, Europe

Pumpjack in a field with the foothills and snow-covered Rocky mountains in the background; Alberta, Canada

Working pumpjacks in the middle of a golden wheat field, post harvest, Edmonton, Alberta, Canada

Pumpjack at sunset; Alberta, Canada

Pumpjack at sunset; Alberta, Canada

Pumpjack in a field with the foothills and snow-covered Rocky mountains in the background; Alberta, Canada