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The impact of climate change will make the poorest communities across the world poorer. Many of them are already affected by conflict and instability and thus face a dual risk. International Alert's new research finds that the consequences of climate change will fuel violent conflict, which itself hinders the ability of governments and local communities to adapt to the pressures of climate change.

With diminished rice harvests, seawater seeping into aquifers and islands vanishing into rising oceans, Southeast Asia will be among the regions worst affected by global warming, according to a report scheduled for release on Monday by the Asian Development Bank.

"The world is struggling with the consequences of the economic crisis in which we find ourselves (but) any of the difficulties we face today will be as nothing when the full horror of global warming unfolds," Charles said.

Fortunately, there is a better option: to make low-carbon alternatives like solar and wind energy competitive with old carbon sources. This requires much more spending on research and development of low-carbon energy technology. We might have assumed that investment in this research would have increased when the Kyoto Protocol made fossil fuel use more expensive, but it has not.

"So those are our choices, folks - an escalating 'More Tax' forever, premised on immediate gratification and short-term thinking, or a 'Carbon Tax Cut' forever, which is exactly what you'll get from establishing a carbon price signal that shapes the market in favor of American interests and not those of our adversaries and competitors. If you're with me, write your member of Congress and senator today."

The wildfires blazing through North Myrtle Beach, S.C., today are hardly an anomaly in a warming world. According to a landmark report that will be published tomorrow in Science, fires are not just a result of a changing climate, they're also contributing to the overall warming trend much more than imagined, the authors report. As vegetation burns, it releases stored-up carbon into the atmosphere, speeding global warming and thereby exacerbating conditions that may generate a greater incidence of wildfires in the coming years.

The effects of climate change are being felt by indigenous peoples from the Arctic to the Caribbean. Inuit livelihoods are disappearing as quickly as the snow, Caribbean Islands are at risk of drowning and the tribes of Borneo can only watch as their rainforests catch fire. Put simply indigenous peoples are at the frontline of climate change. There is a moral duty to protect those vulnerable from climate change, and action needs to be taken now.

The scientific evidence for global warming and for humanity's role in the increase of greenhouse gasses becomes ever more unimpeachable, as the Intergovernmental Panel on Climate Change findings are going to suggest; and such activity has a profound relevance, not just for the environment, but in ethical, economic, social and political terms as well. The consequences of climate change are being felt not only in the environment, but in the entire socioeconomic system and, as seen in the findings of numerous reports already available, they will impact first and foremost the poorest and weakest who, even if they are among the least responsible for global warming, are the most vulnerable because they have limited resources or live in areas at greater risk. We need only think of the small island developing states as one example among many. Many of the most vulnerable societies, already facing energy problems, rely upon agriculture -- the very sector most likely to suffer from climatic shifts. Thus, in order to address the double challenge of climate change and the need for ever greater energy resources, we will have to change our present model from one of the heedless pursuit of economic growth in the name of development, toward a model which heeds the consequences of its actions and is more respectful toward the creation we hold in common, coupled with an integral human development for present and future generations. The complexity of the promotion of sustainable development is evident to all; there are, however, certain underlying principles which can direct research toward adequate and lasting solutions. Humanity must become increasingly conscious of the links between natural ecology, or respect for nature, and human ecology. Experience shows that disregard for the environment harms human coexistence, while at the same time it becomes clearer that there is a positive link to be made between peace with creation and peace among nations.

The effort responds to and builds upon the leadership of Pope Benedict XVI, the U.S. Catholic Bishops, and many Catholic religious communities who believe that our response to climate change must be guided by the exercise of prudence, the pursuit of the common good and a priority for the poor. Pope Benedict most recently referenced "troubling climate change" in his Easter message to the world and has insisted that, "Before it is too late, it is necessary to make courageous decisions that can recreate a strong alliance between humankind and the earth. A decisive 'yes' is needed to protect creation and also a strong commitment to invert those trends which risk leading to irreversibly degrading situations."

In a new report, international aid agency Oxfam says within six years, the number of people affected by climatic crises is projected to rise by 54 per cent to 375 million people.

Some of the mightiest rivers on the planet, including the Ganges, the Niger, and the Yellow river in China, are drying up because of climate change, a study of global waterways warned yesterday. The study by the National Center for Atmospheric Research in Colorado found that global warming has had a far more damaging impact on rivers than had been realised and that, overwhelmingly, those rivers in highly populated areas were the most severely affected. That could threaten food and water supply to millions of people living in some of the world's poorest regions, the study warned.

It is most appropriate for Alaska to be hosting this week's Indigenous People's Global Summit on Climate Change here in Anchorage. Alaska's indigenous people know well a cruel irony of global warming: Those who are suffering the most from a warming climate are those who contribute least to the problem -- and they generally have the fewest resources to cope with the damage. Warming trends in the world's Arctic are undeniable. Sea ice is shrinking, giving storms more chance to pound unprotected shorelines and eat away at low-lying communities. Melting permafrost causes homes and other buildings to heave and twist.

"In my 33 years on the Energy and Commerce Committee, I cannot remember a week of hearings quite like this one," said Markey. "With so much at stake and such little time, I am pleased that our country's business, science and environmental leaders are lining up to engage in this historic week of hearings."

The formal "endangerment finding" names carbon dioxide and five other heat-trapping gases as pollutants subject to regulation under the federal Clean Air Act. This in turn sets the stage - after a 60-day comment period - for broad new rules touching major sectors of the American economy and profoundly influencing how Americans use and generate energy.

In Alaska, climate change is creating an unforeseen humanitarian crisis. Arctic sea ice - which had protected communities from coastal erosion and flooding - is rapidly disappearing and signalling a radical transformation of this northern ecosystem. Scientific observations during the summer of 2007 documented a new record low. In 2006, the US government completed a $2.5m (£1.7m) seawall to protect the native village of Kivalina, located on an island in the Chukchi Sea. But on the day of the dedication ceremony, a storm surge partly destroyed the newly constructed sea barrier. One year later, the community was evacuated to protect inhabitants from a severe storm.

Earlier this year, the World Bank released yet another in a seemingly endless stream of reports by global institutions and universities chronicling the melting of the world's cryosphere, or ice zone. This latest report concerned the glaciers in the Andes and revealed the following: Bolivia's famed Chacaltaya glacier has lost 80 percent of its surface area since 1982, and Peruvian glaciers have lost more than one-fifth of their mass in the past 35 years, reducing by 12 percent the water flow to the country's coastal region, home to 60 percent of Peru's population.