Tundra Swan
Natural History Museum, London/science Photo Library
Tundra Swans
Bob Gibbons/science Photo Library
Tundra Mountain
Mark De Fraeye/science Photo Library
Coastal Tundra Vegetation #1
Simon Fraser/science Photo Library
Coastal Tundra Vegetation
Simon Fraser/science Photo Library
Tundra Pond #1
Simon Fraser/science Photo Library
Tundra Pond #2
Simon Fraser/science Photo Library
Tundra Hummocks #1
Simon Fraser/science Photo Library
Tundra Pond
Simon Fraser/science Photo Library
Tundra Hummocks
Simon Fraser/science Photo Library
Tundra Pond #3
Simon Fraser/science Photo Library
Prehistoric Tundra Landscape
Kennis And Kennis/msf/science Photo Library
Artwork Of The Tundra Mammoth
Mark Garlick/science Photo Library
Bones On The Tundra
Simon Fraser/science Photo Library
Ice Wedge Polygons In Alaskan Tundra
Us Geological Survey, Chris Zimmerman/science Photo Library
Lichens In Tundra
W J Higgs/science Photo Library
Mammals Of The Pleistocene Era
Mauricio Anton
Artwork Of The Mammoths And Aurora
Mark Garlick/science Photo Library
Inukshuk
Peter Menzel/science Photo Library
Svalbard Reindeer Grazing With Auk-horn
Peter J. Raymond
Rutting Svalbard Reindeer
Peter J. Raymond
Woolly Mammoths
Michael Long/science Photo Library
Mammoth And Elephant Compared
Walter Myers
Mammoth Fossil Remains
Michael Long/science Photo Library
Bog Laurel (kalmia Polifolia)
Bob Gibbons/science Photo Library
Siberian Steppes
Nasa/science Photo Library
Volunteers Maintaining Hiking Trail
Jim West
Mount Bierstadt Hiking Trail Car Park
Jim West
Teenagers Maintaining Hiking Trail
Jim West
Volunteers Maintaining Hiking Trail #2
Jim West
Svalbard Reindeer
Dr P. Marazzi
Volunteers Maintaining Hiking Trail #3
Jim West
Mount Bierstadt Hiking Trail
Jim West
Volunteers Maintaining Hiking Trail #4
Jim West
Mount Bierstadt Hiking Trail #1
Jim West
Global Climate Map
Stephen A. Schwarzman Building/the Lionel Pincus And Princess Firyal Map Division/new York Public Library
Mount Bierstadt Hiking Trail #2
Jim West
Volunteers Maintaining Hiking Trail #6
Jim West
Teenager Maintaining Hiking Trail
Jim West
Teenagers Maintaining Hiking Trail #1
Jim West
Weathered Erratic And Glacial Lake
Dr Juerg Alean
Rocky Mountain National Park Trail
Jim West
Trans-alaska Pipeline
Chris Madeley
Arctic Willow Flower
Simon Fraser/science Photo Library
Musk Ox #1
Simon Fraser/science Photo Library
Glacial Landscape
Dr Juerg Alean/science Photo Library
Glacial Landscape #1
Dr Juerg Alean/science Photo Library
North America
Bp/nrsc/science Photo Library
Mammoths And Aurora
Mark Garlick/science Photo Library
Mammoths And Snow
Mark Garlick/science Photo Library
Inca Trail To Machu Picchu
Photostock-israel/science Photo Library
Nootka Lupin (lupinus Nootkatensis)
Daniel Sambraus/science Photo Library
Bog Billberry (vaccinium Uliginosum)
Bob Gibbons/science Photo Library
Inca Trail To Machu Picchu #1
Photostock-israel/science Photo Library
Alpine Bearberry (arctostaphylos Alpina)
Bob Gibbons/science Photo Library
Musk Oxen
Simon Fraser/science Photo Library
Eastern Canada Mosaic
Mda Information Systems/science Photo Library
Bog Saxifrage (saxifraga Hirculus)
Dr P. Marazzi/science Photo Library
Aquatic Plants
Simon Fraser/science Photo Library
Harris's Sparrow
Bob Gibbons/science Photo Library
Long-tailed Skua
John Devries/science Photo Library
Dwarf Birch Leaves
Simon Fraser/science Photo Library
Food Supplies
Peter Menzel/science Photo Library
Asia #1
Nasa/noaa/science Photo Library
Arctic Hares
Simon Fraser/science Photo Library
Prehistoric Baby Mammoth
Michael Long/science Photo Library
Musk Oxen #1
Simon Fraser/science Photo Library
Siberian Wetlands
Nasa/science Photo Library
Mammuthus Primigenius Mammoths
Julius T Csotonyi/science Photo Library
Musk Oxen #2
Simon Fraser/science Photo Library