September 12, 2009 - Plume Geyser eruption, Upper Geyser Basin geothermal area, Yellowstone Caldera, Yellowstone National Park, Wyoming.

September 12, 2009 - Castle Geyser eruption with rainbow, Upper Geyser Basin geothermal area, Yellowstone Caldera, Yellowstone National Park, Wyoming.

September 12, 2009 - Castle Geyser eruption with rainbow, Upper Geyser Basin geothermal area, Yellowstone Caldera, Yellowstone National Park, Wyoming.

September 12, 2009 - Sawmill Geyser, Upper Geyser Basin geothermal area, Yellowstone Caldera, Yellowstone National Park, Wyoming.

September 11, 2009 - White Dome Geyser erupting, Lower Geyser Basin geothermal area, Yellowstone Caldera, Yellowstone National Park, Wyoming.

Looking down into Ubehebe crater, a Maar volcano, caused by groundwater contacting hot magma or lava, Death Valley National Park, California, United States of America, North America

Looking down into Ubehebe crater, a Maar volcano, caused by groundwater contacting hot magma or lava, Death Valley National Park, California, United States of America, North America

Scientific instruments to measure the carbon balance from peat bogs which is changing due to climate change in the north Pennines at Moorhouse, Cumbria, England, United Kingdom, Europe

Strokkur geyser erupting, in the Geysir hot springs area, Haukadalur geothermal area, Southwest Iceland

Strokkur geyser erupting, in the Geysir hot springs area, Haukadalur geothermal area, Southwest Iceland

Alaska Pipeline

Sensitive Habitat sign in Ballona Wetlands, Playa Vista, Los Angeles

Rattlesnake warning sign in Ballona Wetlands, Playa Vista, Los Angeles

Garbage Boom along Ballona Creek

Ballona Wetlands with wildflowers, Playa Del Rey, Los Angeles

Garbage Boom along Ballona Creek

Plastic waste, plastic bottle, street garbage, Port-au-Prince, Ouest, Haiti, Central America

Ojos del Salar, groundwater ponds and surface of the Salar predominantly natriumchloride. Landscape on the salt flats Salar Salinas Grandes in the Altiplano. South America, Argentina