Publication Name

This is a United Nations Environment Programme

publication, written and produced by GRID-Arendal

at the request of the Environment Management

Group.

2008

UNEMG, UNEP/GRID-Arendal

ISBN:

978-92-807-2926-9

Printed with plant-based ink on 100% recycled pa-

per at PROGRESS PRESS LTD – MALTA

This publication may be reproduced in whole or in part in

any form for educational or non-profit purposes without

special permission from the copyright holders, provided

acknowledgement of the source is made. UNEP and EMG

would appreciate receiving a copy of any material that

uses this publication as a source.

No use of this publication may be made for resale or for

any commercial purpose whatsoever without prior permis-

sion in written form from the copyright holders. The use of

information from this publication concerning proprietary

products for advertising is not permitted.

Disclaimer:

The designations employed and the

presentation of the material in this

publication do not imply the expres-

sion of any opinion whatsoever on

the part of the United Nations En-

vironment Programme concerning

the legal status of any country, ter-

ritory, city or area or of its authori-

ties, or concerning delimitation of

its frontiers or boundaries Mention

of a commercial company or prod-

uct does not imply endorsement by

the cooperating partners. We regret

any errors or omissions that may

unwittingly have been made. More-

over, the views expressed do not

necessarily represent the decision

or the stated policy of the United

Nations Environment Programme,

nor does citing of trade names or

commercial processes constitute

endorsement.

UNEP promotes

environmentally sound practices

globally and in its own activities. This

publication is printed on fully recycled paper,

FSC certified, post-consumer waste and chlorine-

free. Inks are vegetable-based and coatings are

water-based. Our distribution policy aims to reduce

UNEP’s carbon footprint.