Winfried Wisniewski / Geyser erupting, Selfoss, Iceland, sequence 3 of 3

Winfried Wisniewski / Geyser erupting, Selfoss, Iceland, sequence 2 of 3

Winfried Wisniewski / Geyser erupting, Selfoss, Iceland, sequence 1 of 3

Winfried Wisniewski / Geyser erupting, Selfoss, Iceland, sequence 4 of 4

Winfried Wisniewski / Geyser erupting, Selfoss, Iceland, sequence 3 of 4

Winfried Wisniewski / Geyser erupting, Selfoss, Iceland, sequence 2 of 4

Winfried Wisniewski / Geyser erupting, Selfoss, Iceland, sequence 1 of 4

Winfried Wisniewski / Solfatara in geothermal area, Hverir, Iceland

Vincent Grafhorst / Welwitschia Weevil(Odontopus sexpunctatus) and nymphs on Welwitschia (Welwitschia mirabilis) cone, Namib Desert, Namibia

Kevin Schafer / Painted Dunes below Cinder Cone, Lassen Volcanic National Park, California

Kevin Schafer / Painted Dunes below Cinder Cone, Lassen Volcanic National Park, California

Kevin Schafer / Cinder Cone, Lassen Volcanic National Park, California

Kevin Schafer / Steam vents and fumaroles, Bumpass Hell, Lassen Volcanic National Park, California

Duncan Usher / Tourists watching eruption of Strokkur Geyser, Iceland

Tui De Roy / Galapagos Hawk (Buteo galapagoensis) pair overlooking sulphur fumaroles on caldera rim, Alcedo Volcano, Isabela Island, Galapagos Islands, Ecuador

Suzi Eszterhas / Craters along shore of Myvatn Lake, northern Iceland

Duncan Usher / Old Faithful erupting, Upper Geyser Basin, Yellowstone National Park, Wyoming

Alex Mustard / A diver swimming in the cold, clear waters of the Blue Lagoon at Silfraa, with tectonically fractured volcanic rocks in the foreground. Thingvellir National Park, Iceland. May 2011.

Alex Mustard / Diver explores fractures in the volcanic rocks within the Blue lagoon off Silfra Canyon in Thingvillir National Park, Iceland. May 2011.

Thomas Marent / Norway Spruce (Picea abies) female cones, Switzerland

Thomas Marent / Norway Spruce (Picea abies) female cones, Switzerland

Chien Lee / Crater lake, Mount Bisoke, Parc National des Volcans, Rwanda

Duncan Usher / Honey Fungus (Armillaria mellea) mushrooms and pine cone at base of tree, Germany

Cyril Ruoso / Opuntia (Opuntia) cactus in lava field of the Volcan de las Virgenes, El Vizcaino Biosphere Reserve, Mexico

Cyril Ruoso / Pitaya Agria (Stenocereus gummosus) cactus in lava field of Volcan de las Virgenes, El Vizcaino Biosphere Reserve, Mexico

Cyril Ruoso / Organ Pipe Cactus (Stenocereus thurberi) in lava field of Volcan de las Virgenes, El Vizcaino Biosphere Reserve, Mexico

Cyril Ruoso / Ball Python (Python regius), individuals for the pet trade are checked in customs in regard to CITES and local law, France

Cyril Ruoso / Lava field and sand storm around the Askja caldera, Askja, central Iceland

Cyril Ruoso / Steaming lava field still hot after the last eruption in 1984, Iceland

Cyril Ruoso / Steaming solfatare or fumarole, geothermal activity, Namafjall, Iceland

Cyril Ruoso / Steaming solfatare or fumarole, geothermic activity, Hveravellir, central Iceland

Cyril Ruoso / Geyser erupting 20 meters high every 8 minutes, central Iceland

Cyril Ruoso / Geyser erupting 20 meters high every 8 minutes, central Iceland. Sequence 2 of 2

Cyril Ruoso / Geyser erupting 20 meters high every 8 minutes, central Iceland. Sequence 1 of 2

Cyril Ruoso / Volcanic coastline, Vestmannaeyjar Island, Iceland

Cyril Ruoso / Steam rises up from vents surrounding walkway through hot springs, Iceland

D. Parer & E. Parer-Cook / Crater, Daphne Island, Galapagos Islands, Ecuador

D. Parer & E. Parer-Cook / Galapagos Sea Lion (Zalophus wollebaeki) with a fishing hook stuck in its mouth, Galapagos Islands, Ecuador

Sergey Gorshkov / Eruption of Tolbachik Volcano, Kamchatka, Russia

Sergey Gorshkov / Lava flow and snow, Tolbachik Volcano, Kamchatka, Russia

Sergey Gorshkov / Lava flow burning forest, Tolbachik Volcano, Kamchatka, Russia

Sergey Gorshkov / Tolbachik Volcano erupting, Kamchatka, Russia

Tim Fitzharris / Old Faithful geyser spouting, Yellowstone National Park, Wyoming

Sergey Gorshkov / Eruption of Tolbachik Volcano, Kamchatka, Russia

Sergey Gorshkov / Lava flow burning forest, Tolbachik Volcano, Kamchatka, Russia

Sergey Gorshkov / Lava flow burning forest, Tolbachik Volcano, Kamchatka, Russia

Sergey Gorshkov / Eruption of Tolbachik Volcano, Kamchatka, Russia

Sergey Gorshkov / Eruption of Tolbachik Volcano, Kamchatka, Russia

Sergey Gorshkov / Eruption of Tolbachik Volcano, Kamchatka, Russia

Sergey Gorshkov / Eruption of Tolbachik Volcano, Kamchatka, Russia

Sergey Gorshkov / Eruption of Tolbachik Volcano, Kamchatka, Russia

Sergey Gorshkov / Lava flow, Tolbachik Volcano, Kamchatka, Russia

Sergey Gorshkov / Eruption of Tolbachik Volcano, Kamchatka, Russia

Sergey Gorshkov / Lava flow, Tolbachik Volcano, Kamchatka, Russia

Sergey Gorshkov / Eruption of Tolbachik Volcano, Kamchatka, Russia

Sergey Gorshkov / Eruption of Tolbachik Volcano, Kamchatka, Russia

Sergey Gorshkov / Lava flow, Tolbachik Volcano, Kamchatka, Russia

Sergey Gorshkov / Lava flow burning forest, Tolbachik Volcano, Kamchatka, Russia

Erlend Haarberg / Fumarole at sunrise at the Hverir, Iceland, July 2008

Erlend Haarberg / Solidified lava surface from previous volcanic activity, Leirhnjukur, Iceland, June 2008

Colin Monteath / Snow-covered volcano showing caldera, Andes, Chile

Doc White / Steam from underwater volcanic activity. Socorro Island, Baja Mexico.

Doc White / Steam from underwater volcanic activity. Socorro Island, Baja Mexico.

Doc White / Steam from underwater volcanic activity. Socorro Island, Baja Mexico.

Doc White / Steam from underwater volcanic activity. Socorro Island, Baja Mexico.

Norbert Wu / Lava and mud flow frozen on barren volcanic crater, Socorro Island, Revillagigedos Islands, Mexico

Piotr Naskrecki / Cycad (Cycas sp) immature female cone, South Africa

Piotr Naskrecki / Water Horsetail (Equisetum fluviatile) stem and cone, Estabrook Woods, Massachusetts

Kevin Schafer / Aerial view of Mount St Helens crater with Mount Adams behind, Mount St Helens National Volcanic Monument, Washington

Kevin Schafer / Aerial view of Mount St Helens crater with Mount Hood behind, Mount St Helens National Volcanic Monument, Washington

Kevin Schafer / Aerial view of Mount St Helens crater with Mount Rainier behind, Mount St Helens National Volcanic Monument, Washington

Kevin Schafer / Aerial view of Mount St Helens crater with Mt Adams and Hood behind, Mount St Helens National Volcanic Monument, Washington

Kevin Schafer / Aerial view of crater rim on south slope of Mount St Helens, Mount St Helens National Volcanic Monument, Washington

Kevin Schafer / Aerial view of steam rising from lava inside crater, Mount St Helens National Volcanic Monument, Washington

Kevin Schafer / Lava tube and person in Ape Cave, Mount St Helens Volcano National Monument, Washington

Konrad Wothe / Norway Spruce (Picea abies) cones in spring, Germany

Kevin Schafer / Torrey Pine (Pinus torreyana) cone, Santa Rosa Island, Channel Islands National Park, California

Pete Oxford / Galapagos Fur Seal (Arctocephalus galapagoensis) male on cool lava, Cape Hammond, Fernandina Island, Galapagos Islands, Ecuador

Pete Oxford / Galapagos Sea Lion (Zalophus wollebaeki) on cooled lava, Floreana Island, Galapagos Islands, Ecuador

Steve Gettle / White-winged Crossbill (Loxia leucoptera) male feeding, Michigan

Gerry Ellis / Albany Cycad (Encephalartos latifrons) cone, Kirstenbosch Garden, South Africa

Gerry Ellis / Ama'u Fern (Sadleria sp) in lava field, Hawaii Volcanoes National Park, Hawaii

Rob Brown / Mount Ngauruhoe and Mount Ruapehu, Tongariro National Park, New Zealand

Tui De Roy / Galapagos Lava Lizard (Microlophus albemarlensis) young male lifting toes to avoid overheating on hot lava, Galapagos Islands, Ecuador

Tui De Roy / Galapagos Land Iguana (Conolophus subcristatus) on caldera rim, Galapagos Islands, Ecuador

Tui De Roy / Volcan Alcedo Giant Tortoise (Chelonoidis nigra vandenburghi) searching for water around steaming fumaroles during prolonged dry season, Isabella Island, Galapagos Islands, Ecuador

Tui De Roy / Volcan Alcedo Giant Tortoise (Chelonoidis nigra vandenburghi) near fumarole, Isabella Island, Galapagos Islands, Ecuador

Tui De Roy / Volcan Alcedo Giant Tortoise (Chelonoidis nigra vandenburghi) male on caldera floor, Isabella Island, Galapagos Islands, Ecuador

Tui De Roy / Volcan Alcedo Giant Tortoise (Chelonoidis nigra vandenburghi) male with steaming fumaroles on caldera floor, Isabella Island, Galapagos Islands, Ecuador

Tui De Roy / Volcan Alcedo Giant Tortoise (Chelonoidis nigra vandenburghi) male walking past steaming fumaroles on caldera, Isabella Island, Galapagos Islands, Ecuador

Tui De Roy / Volcan Alcedo Giant Tortoise (Chelonoidis nigra vandenburghi) male walking past steaming fumaroles in caldera, Isabella Island, Galapagos Islands, Ecuador

Tui De Roy / Volcan Alcedo Giant Tortoise (Chelonoidis nigra vandenburghi) wallowing in fast drying rain pool on caldera floor, Isabella Island, Galapagos Islands, Ecuador

Tui De Roy / Volcan Alcedo Giant Tortoise (Chelonoidis nigra vandenburghi) group wallowing in rain pool on caldera floor, Isabella Island, Galapagos Islands, Ecuador

Tui De Roy / Volcan Alcedo Giant Tortoise (Chelonoidis nigra vandenburghi) group wallowing in rain pool on caldera floor, Isabella Island, Galapagos Islands, Ecuador

Tui De Roy / Volcan Alcedo Giant Tortoise (Chelonoidis nigra vandenburghi) males on caldera floor, Isabella Island, Galapagos Islands, Ecuador

Tui De Roy / Volcan Alcedo Giant Tortoise (Chelonoidis nigra vandenburghi) males on caldera floor, Isabella Island, Galapagos Islands, Ecuador