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As environmental problems continue to increase at an ever more rapid rate, exacerbated by the major threat of global climate change, the need for widespread remedial action is becoming ever more pressing. Scientific consensus on both the root causes of these problems and the measures required to tackle them is growing, while mass media and public interest has reached fever pitch. Of course, while this has put pressure on decisionmakers to take positive action, the realisation of the gravity and extent of the environmental problems has encouraged all those concerned about the state of our world to search for partners around it: one such significant partnership to e­merge in recent years is between those concerned with the conservation of nature –and of its biodiversity– and the custodians of sacred sites, representing both indigenous beliefs and mainstream faiths.

The Fourth Assessment Report of the Intergovernmental Panel on Climate Change 1/ revealed that climate change is threatening the very basis of life. In fact, 20-30 per cent of species assessed so far will face increased risks of extinction if global temperatures increase by 1.5-2.5°C, and critical ecosystems are already being degraded. For example, over the past 100 years, the thickness of sea ice in the Arctic has decreased by 40 per cent, while total available water in the Niger, Lake Chad and Senegal basins has decreased by 40-60 per cent, In the face of such changes to the basic structure and functions of ecosystems, climate change is already forcing species to adapt either through shifting habitat, changing life-cycles, or the development of new physical traits.

Observational records and climate projections provide abundant evidence that freshwater resources are vulnerable and have the potential to be strongly impacted by climate change, with wide-ranging consequences for human societies and ecosystems. Observed warming over several decades has been linked to changes in the large-scale hydrological cycle such as: increasing atmospheric water vapour content; changing precipitation patterns, intensity and extremes; reduced snow cover and widespread melting of ice; and changes in soil moisture and runoff. Precipitation changes show substantial spatial and inter-decadal variability. Over the 20th century, precipitation has mostly increased over land in high northern latitudes, while decreases have dominated from 10°S to 30°N since the 1970s. The frequency of heavy precipitation events (or proportion of total rainfall from heavy falls) has increased over most areas (likely). Globally, the area of land classified as very dry has more than doubled since the 1970s (likely). There have been significant decreases in water storage in mountain glaciers and Northern Hemisphere snow cover. Shifts in the amplitude and timing of runoff in glacier- and snowmelt-fed rivers, and in ice-related phenomena in rivers and lakes, have been observed (high confidence).

Ice, snow and climate change are closely linked. The Global Outlook for Ice and Snow investigates those linkages. It also presents information on the trends in ice and snow, the outlook for this century and beyond and the consequences to ecosystems and human well-being of these changes. It covers all parts of the cryosphere (the world of ice): snow, land ice, sea ice, river and lake ice, and frozen ground. The Global Outlook for Ice and Snow was written by more than 70 scientists from around the world.

Climate variability is the variation around the average climate, including seasonal variations as well as large-scale variations in atmospheric and ocean circulation such as the EI Nino/Southern Oscillation (ENSO). Climate change operates over decades or longer. Changes in climate occur as a result of internal variability within the climate system and external factors (natural and anthropogenic). Although climate is always changing, over the past 10,000 years it has been both relatively stable and warm.

Small island states are the countries likely to be most vulnerable to climate variability and long-term climate change, particularly extreme weather and climate events (such as cyclones, floods and droughts) and sea-level rise. Many small island states share characteristics that increase their vulnerability, these include their small sizes, isolation,limited fresh water and other natural resources, fragile economies, often dense populations,poorly developed infrastructures and limited financial and human resources. To understand better the potential health impacts of climate variability and change in small island states and to build capacity to cope with climate change through adaptation planning, a series of workshops and a conference were organized by the World Health Organization (WHO) in partnership with the World Meteorological Organization (WMO) and the United Nations Environment Programme (UNEP)(WHO 2000; Aron et al. 2003; WHO 2003). This report synthesizes the information presented and identifies key recommendations for improving the health sector’s capacity to anticipate and prepare for climate variability and change. There is ample evidence that many small island states currently are vulnerable to climate variability. Climate change projections increase the level of concern because models suggest that small island states will experience not only warmer temperatures, but also increased climate variability. The consequences of increased climate variability are likely to be related to changes in rainfall, soil moisture budgets, prevailing winds (speed and direction), regional and local sea levels and patterns of wave action. El Niño events are likely to strengthen the short-term and inter annual variations. In addition, global mean sea level is projected to increase by0.09 m to 0.88 m by 2100. To understand better the potential human health consequences o fthese projected changes, the following questions were addressed

Coral reefs are one of the most spectacular and valuable ecosystems on the planet — and one of the most threatened. Climate change, coastal development and tourism, destructive fishing, and other human activities are endangering their very existence. At the current rate of destruction, more than one-third of the world’s coral reefs will be destroyed within our lifetime. This will mean devastating losses in biological diversity, shoreline protection, income, food, and scientific discoveries. However bad the outlook may seem, there is still hope for coral reefs. With increased education comes an increased appreciation and understanding of the immense value of coral reefs. This has led to exciting initiatives and conservation projects in countries throughout the world. Coral reef protected areas are being established worldwide and are considered one of the best tools for reef protection.

International waters is one of four focal areas of the Global Environment Facility (GEF). The GEF was created in 1994 to provide financing for programmes and projects to achieve global environment benefits in four focal areas: ?? biodiversity; ?? climate change; ?? international waters; and ?? and ozone layer depletion. International waters include oceans, large marine ecosystems, enclosed or semi-enclosed seas and estuaries as well as rivers, lakes, groundwater systems, and wetlands with trans-boundary drainage basins or common borders involving two or more countries. The ecosystems and habitats associated with these waters are essential parts of the system (IWP 2002c).