Images Dated 8th April 2004

Glacier crevasses, Canada

Tellot Glacier. A glacier is a huge mass of ice slowly moving over a land mass, formed from compacted snow. The deep crevasses seen here are created when planes of ice within the glacier move past each other, causing shear forces that cause trenches to develop. The mountains at upper left are a section of the Waddington Range, part of the Canadian Rockies. Photographed in British Columbia, Canada

© David Nunuk/Science Photo Library

NA, USA, Colorado, White River National Forest Light snow and quaking aspen trees

USA, Colorado, White River National Forest. Light snow and quaking aspen trees

© Adam Jones / Danita Delimont, Agent

Adam Jones, Aspen, Colorado, Danita Delimont, Environment, Flora, Forest, Grove, Landscape, National Forest, Nature, North America, Park, Path, Pathway, Public Land, Rf, Rural, Scene, Scenic, Season, Snow, Snowfall, Tree, Usa, White, White River, Winter, Wood

Pile of woodchips at a sawmill

Wood chips at a sawmill. The chips are produced during the cutting of logs into pieces of timber. The wood chips may be used for a variety of purposes. They may compressed to form boards ('chipboard') then laminated with an outer wood or plastic veneer. This is then sold as a cheap alternative to solid timber in the furniture industry

© DAVID NUNUK/SCIENCE PHOTO LIBRARY