Herd of goats on road, near Benimaurell, Vall de Laguar, Marina Alta, Alicante province, Spain, Europe

Camels and guide, Zaafrane, Tunisia, North Africa

Driving sheep, Tarras, Central Otago, South Island, New Zealand, Pacific

Follow The Sun sculpture, Pioneers Museum, Colorado Springs, Colorado, United States of America, North America

Follow The Sun sculpture, Pioneers Museum, Colorado Springs, Colorado, United States of America, North America

Photovoltaic solar tracker at a solar farm near Antissa, Lesbos (Lesvos), Greece. MORE INFO: Solar trackers automatically rotate and tilt photovoltaic panels to follow the sun throught the day, maximising sunlight absorpton rates. Several of these Solar farms have been built on Lesbos since 2010.

Solar farm with four Photovoltaic solar trackers, near Antissa, Lesbos (Lesvos), Greece. MORE INFO: Solar trackers automatically rotate and tilt photovoltaic panels to follow the sun throught the day, maximising sunlight absorpton rates. Several of these Solar farms have been built on Lesbos since 2010.

South of Sacramento, California, solar panels that follow the sun with the aid of mechanical timers, stretch across fields at the base of an older, abandoned energy site, a nuclear plant.

Silhouette of two, blue wildebeest (Connochaetes taurinus) crossing horizon at sunset, Serengeti National Park, Tanzania, Africa

Couple hiking with backpacks, Utah, United States

Couple hiking with backpacks, Utah, United States

People riding mountain bikes

Farmer in traditional clothes and domestic buffalo for agricultural work, Xiapu County, Fujiang Province, China

Polar bear (Ursus maritimus), (3 months twin cubs following their mum up on a ridge. Churchill, MB, Canada

Polar bear (Ursus maritimus), (3 months twin cubs following their mum up on a ridge. Churchill, MB, Canada

Mongol driving a camel caravan of Bactrian camel (Camelus bactrianus), Bashang Grassland, Zhangjiakou, Hebei Province, Inner Mongolia, China

African Savannah Elephants or Savannah Elephants (Loxodonta africana), moves in the savannah at sunset, Masai Mara National Reserve, National Park, Kenya

Bedouin and camel (Camelus dromedarius) in the desert, Sahara, Morocco

Horseback riding in the middle of giants saguaro cactus. Tanque Verde ranch. Tucson. Arizona. USA.

Flight of Cranes (Grus grus) sunset at Lake Der, Haute Marne, Montier en Der, Haute-Marne, France

Elephant back safari, Abu Camp, Okavango Delta, Botswana

Polar bear (Ursus maritimus), 3 month old cubs following their mother. Churchill, MB, Canada

Wildebeest at dusk, Kalahari Botswana