Photo enthusiasts are urged to enter the 2008 Environmental Photographer of the Year competition.

Open to amateurs and professional worldwide the categories are: Changing Climates, A World of Difference, Quality of Life; and The Natural World.

Work will be judged on ?impact, creativity, composition, originality and technical abilities?, say organisers.

A spokesman added: ?The competition seeks to celebrate photographers who use their ability to raise awareness of environmental and social issues.?

The contest, organised by The Chartered Institution of Water and Environmental Management, also includes an under-21 category with ‘no thematic boundaries’.

The closing date is 31 July 2008.

For details visit www.ciwem.org/awards/epoty