Itaipu Dam, Brazil-Paraguay Border: The reservoir of the Itaipu Dam, some of which can be seen here, extends over more than 520 square miles (1,350 sq km) along the border of Paraguay and Brazil. Its immediate surroundings are protected, but the rest of the area is devoted to agriculture. Image: © CNES 2007 – Distribution Astrium Services / SPOT Image

Sundurbans, West Bengal/Bangladesh, India: The mangroves of the Sundurbans in the Gulf of Bengal cover about 3,860 square miles (10,000 sq km) of land. The largest of this type in the world, they also shelter a rich biodiversity: smooth-coated otters, 260 bird species, sika deer, wild boars, sand fiddler crabs... Some endangered species live here, too, including the estuarine crocodile, the Indian python and the Bengal tiger. Image: © NASA/GSFC/USGS EROS Data Center

Mount Taranaki (Egmont), New Zealand North Island: The TerraSAR-X radar satellite reveals the outline of Egmont National park, which can be identified by the difference in color between the slopes of Mount Taranaki (or Mount Egmont) volcano and the rest of the area. This circle with a radius of 5.9 miles (9.6 km) is not a natural occurrence: It separates the park's lush forest from surrounding pasture zones. Mount Taranaki stands 8,261 feet (2,518 m) tall and has been totally inactive since 1755. Its peak is covered in perennial snow, while nearby Fanthams Peak has none at all. Image: © CNES 2004-2011 – Distribution Astrium Services / SPOT Image

Hoggar Mountains, Algeria: Located in the south of the country, in Tamanrasset province, the Hoggar mountains consist of volcanic rock punctuated by lava flows and extinct volcanoes, some of which are close to 10,000 feet (3,000 m) tall. Image: © CNES 2006 – Distribution Astrium Services / SPOT Image

Ebro Delta, Spain: The Ebro is Spain's most powerful river. Stretching for more than 550 miles (900 km), it flows into the Mediterranean through a vast delta that juts far into the sea. Abundant alluvium and an ingenious system of irrigation channels favor rice plantations, notably the famous bomba rice. The Ebro Delta National Park, founded in 1983 and covering 19,279 acres (7,802 hectares), is the largest wet zone in Catalonia. Image: © CNES 2008 – Distribution Astrium Services / SPOT Image

Ordos Desert, Inner Mongolia, China: The Ordos Desert is an area of steppes and desert covering more than 34,750 square miles (90,000 sq km) in southern Inner Mongolia. With the exception of the Huan He (the Yellow River) valley, the region is arid and poor, cut off by steep hills in the north and crisscrossed by dunes in the south. Image: © CNES 2002 – Distribution Astrium Services / SPOT Image

Florida Keys: Consisting of about 1,000 islands and coral islets, the Keys archipelago is an extension of Florida's southern tip. Some islets remain uninhabited and are covered in mangroves. These are sometimes completely submerged by storm waves. This phenomenon is likely to happen more frequently, given that global warming is accompanied by an increase in intensity of hurricanes. The fragile ecosystem of the Keys, which are home to more than 250 bird species, is legally protected. Image: © CNES 2005 – Distribution Astrium Services / SPOT Image

Mount Everest, Nepal: Mount Everest, the tallest point on the planet, stands 29,028 feet (8,848 m) tall. Its peak was first conquered in 1953. Since then, its perilous ascension remains limited to elite mountain climbers. Yet even those who set foot on the world's tallest peaks have noted that the volume of ice is shrinking. Image: © CNES 2010 – Distribution Astrium Services / SPOT Image

Esperance, Australia: This image shows the expansion of agricultural land into the forest north of the city of Esperance. From 1990-2010, Australia annually lost close to 642,470 acres (260,000 hectares) of forest, or 0.17 percent of its forest cover, due to agricultural and urban growth. Image: © CNES 2001 – Distribution Astrium Services / SPOT Image

Dasht-e Kavir, Iran: The Dasht-e Kavir is the larger of the two deserts occupying most of Iran's central plateau. This sparsely populated salt desert in the country's center north is close to 500 miles (800 km) long and 200 miles (300 km) wide. Located at the site of a former inland sea, this arid region covered in salts is known for its kavir, "salt swamps," which sometimes form areas of quicksand. Image: © CNES 2000 – Distribution Astrium Services / SPOT Image

Bac Lieu Province, Vietnam: There are many aquaculture facilities in the area of the Mekong delta -- notably shrimp farms. But fish farming causes problems similar to those raised by factory farming, particularly in terms of pollution: high concentrations of of nitrogen, vulnerability to disease, and the use of antibiotics to fight infections, as well as other hormones and harmful additives. Image: © CNES 2013 – Distribution Astrium Services / SPOT Image

Chuquicamata Mine, Chile: This open-pit mine -- measuring 1.2 miles (2 km) wide, 1.8 miles (3 km) long and 2,600 feet (800 m) deep -- is one of the largest ones in the world. Its highly coveted ore is the richest in copper. It also has a high sulfate content, toxic particles of which are found in clouds of dust released by explosions and the endless coming and going of trucks. workers are not permitted to work in the mine for more than three years and are at risk of contracting lung cancer. Image: © CNES 2012 – Distribution Astrium Services / SPOT Image