Atmosphere,Salt flats in Purmamarca, Argentina.
Ice,Iceberg in Ilulissat Icefjord, Greenland.
Ice,Meltwater on the surface of Jakobshavn Glacier, Greenland.
Ice,El Capitan in Yosemite National Park, California.
Ice,Snow drift near Argentiu00E8re Glacier, Alps, France.
Ice,Ice cave beneath the Engabreen Glacier in Svartisen, northern Norway.
Ice,Glacial erratic, dropped by receding glacier in Yosemite National Park, California.
Oceans,Gorge cutting into the coast of Molokai, Hawaii.
Oceans,Banks of coral off the coast of Oahu, Hawaii.
Oceans,Iain Stewart in front of salt flats in Purmamarca, Argentina.
Oceans,Fissures in the ground through a port hole, Afar region, Ethiopia.
Oceans,The sun sets over Pipeline Beach, Hawaii.
Oceans,Golden jellyfish - in Jellyfish Lake, Palau - are often found in these large salt water lakes that are almost cut off from the sea.
Oceans,Computer-generated image depicting all the world's water shown gathered into one surprisingly small sphere.
Oceans,Computer-generated image of Earth from space.
Rare Planet,Sunset in Nullarbor Plain, southwestern Australia.
Rare Planet,Sunset in Nullarbor Plain, southwestern Australia.
Rare Planet,Jagged mountains.
Rare Planet,Baobab Trees in Avenue du Baobab, Madagascar.
Volcanoes,Spewing lava in Erte Ale, Ethiopia.
Volcanoes,A sea of orange-colored dunes in the Namib Desert show plate tectonics at work.
Volcanoes,Mud pool in Waitapu, New Zealand.
Volcanoes,Champagne pool in Waitapu, New Zealand.
Volcanoes,Strokkur geyser has a very predictable eruption schedule, erupting every five to ten minutes, and is next to Geysir geyser in Iceland.
Volcanoes,Spewing lava in Erte Ale, Ethiopia.
Volcanoes,Host Iain Stewart in front of a computer-generated image depicting the perpetual convection of hot plumes of rock from Earth's core to its crust.
Volcanoes,Computer-generated image depicting the perpetual convection of hot plumes of rock from Earth's core to its crust.
Volcanoes,Silfra Crack, Iceland is the location where Europe and America's continental plates meet and drift apart.
