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Frog sur Twitter : "Arco, Idaho, the world's first CO2 free Community in 1955! #ClimateChange... The UK's bad weather continues - in pictures | UK news. Scientists struggle to complete climate impacts report. 29 March 2014Last updated at 20:49 ET By Matt McGrath Environment correspondent, BBC News, Yokohama, Japan Parts of Asia are expected to be particularly susceptible to future flooding Negotiators worked through the night here in Yokohama in an effort to complete their review of a key report on the impacts of climate change.

At stake is a dense 29-page summary detailing the effects of climate change on the planet over the next 100 years. Several hundred members of the UN's climate panel have been deep in deliberations since Tuesday, with many sessions running very late. The report is the first such assessment since 2007. Continue reading the main story “Start Quote We... have a much sharper focus on the things that can be done to reduce the risks” End QuoteDr Chris FieldCo-chair, IPCC working group 2 The tired attendees left the conference centre at eight thirty in the evening as the lights were dimmed to commemorate Earth Hour. There are two new chapters detailing impacts on the oceans. America could soon face more days of extreme rainfall. Wavier jet stream 'may drive weather shift'

15 February 2014Last updated at 14:32 ET By Pallab Ghosh Science correspondent, BBC News, Chicago Pallab Ghosh: "We may have to get used to winters where spells of weather go on for weeks - or even months" The main system that helps determine the weather over Northern Europe and North America may be changing, research suggests. The study shows that the so-called jet stream has increasingly taken a longer, meandering path. This has resulted in weather remaining the same for more prolonged periods. The work was presented at the annual meeting of the American Association for the Advancement of Science (AAAS) in Chicago. The observation could be as a result of the recent warming of the Arctic. According to Prof Jennifer Francis of Rutgers University in New Jersey: "This does seem to suggest that weather patterns are changing and people are noticing that the weather in their area is not what it used to be.

" Continue reading the main story “Start Quote End QuoteProf Jennifer FrancisRutgers University. What the U.N.’s new climate report says about North America. Global warming is a global crisis, but the effects of climate change are being felt differently in different corners of the globe. The latest report from the U.N.

Intergovernmental Panel on Climate Change warns of a world wracked by hunger, violence, and extinctions. But the IPCC also dedicates chapters to impacts that are underway and anticipated in individual regions and continents. For North America, the report states there is “high confidence” of links between climate change and rising temperatures, ravaging downpours, and declining water supplies. Even if temperatures are allowed to rise by just 3.6 degrees Fahrenheit (2 C), which is the goal of current international climate negotiations (a goal that won’t be met unless everybody gets a lot more serious about curbing greenhouse gas pollution), such severe weather is going to get a lot worse.

Here are some highlights from the North American chapter of the IPCC’s new report: Care about other parts of the world? Africa. Europe. Asia. At-risk cities hold solutions to climate change. It is already taking shape as the 21st century urban nightmare: A big storm hits a city like Shanghai, Mumbai, Miami, or New York, knocking out power supply and waste treatment plants, washing out entire neighborhoods, and marooning the survivors in a toxic and foul-smelling swamp. Now the world’s leading scientists are suggesting that those same cities in harm’s way could help drive solutions to climate change.

A draft report from the Intergovernmental Panel on Climate Change (IPCC), obtained by the Guardian, says smart choices in urban planning and investment in public transport could help significantly lower greenhouse gas emissions, especially in developing countries. The draft is due for release in Berlin on Sunday, the third and final installment of the IPCC’s authoritative report on climate change. “The next two decades present a window of opportunity for urban mitigation as most of the world’s urban areas and their infrastructure have yet to be constructed,” the draft said. Scientists tell Americans: This climate change thing really is a big deal. One of the world’s largest and most influential science organizations is launching a new campaign to cut through the noise of climate denialism and help the public understand the threat of climate change.

The American Association for the Advancement of Science kicked things off on Monday by publishing a 20-page report entitled What We Know. The gist: We know that global warming is real, risky, and demands a serious response — “the three Rs of climate change.” “We’re trying to provide a voice for the scientific community on this issue so that we can help the country, help the world move this issue forward,” AAAS CEO Alan Leshner said during a call with reporters on Tuesday morning. “If we don’t move now we are at tremendous risk for some very high impact consequences, many of which are laid out in the report.”

The AAAS has also assembled a panel of a 13 leading scientists who will make public presentations and try to spread climate smarts far and wide. The report is not all gloom and doom. Winter in den USA: Kälte-Kunst in der Eishöhle. Seit 1994 gab es nicht mehr so viel Eis auf den Great Lakes im US-Bundesstaat Michigan: Die anhaltende Kälte hat dort die Seenlandschaft in ein besonderes Naturschauspiel verwandelt. Zum Besuchermagneten wurden die Höhlen der Apostle Islands, in denen meterlange Eiszapfen von der Decke hängen. Normalerweise sind sie nur per Boot zu erreichen, dank der stabilen Eisdecke auf dem Wasser führt nun ein spektakulärer Winterspaziergang dorthin.

Mehr als 35.000 Schaulustige kamen in den vergangenen Tagen bereits hierher. Während im Mittleren Westen Spaziergänger die Schönheiten der Kälte genießen, herrscht andernorts in den USA weiter Katastrophenalarm. In 48 von 50 Bundesstaaten liegt derzeit Schnee - nur Florida und Hawaii blieben bislang verschont. Auch in anderen Ländern herrschen extreme Wetterbedingungen: In einigen Regionen Japans wurden Rekordschneefälle gemessen, in Großbritannien sorgten starke Stürme und Überschwemmungen für schwere Schäden. News verfolgen alles aus der Rubrik Reise.

Western Antarctic ice sheet collapse has already begun, scientists warn | Environment. The collapse of the Western Antarctica ice sheet is already under way and is unstoppable, two separate teams of scientists said on Monday. The glaciers' retreat is being driven by climate change and is already causing sea-level rise at a much faster rate than scientists had anticipated.

The loss of the entire western Antarctica ice sheet could eventually cause up to 4 metres (13ft) of sea-level rise, devastating low-lying and coastal areas around the world. But the researchers said that even though such a rise could not be stopped, it is still several centuries off, and potentially up to 1,000 years away. The two studies, by Nasa and the University of Washington, looked at the ice sheets of western Antarctica over different periods of time. The Nasa researchers focused on melting over the last 20 years, while the scientists at the University of Washington used computer modelling to look into the future of the western Antarctic ice sheet. But collapse is inevitable, the scientists said. Heatwaves could threaten food crops, study warns | Environment. Future heatwaves could threaten key global food crops if climate change is not addressed, according to a British study. Researchers came to the conclusion after estimating the effects of extreme temperatures and raised carbon dioxide levels on maize, wheat and soybean production.

While more C02 in the atmosphere may boost plant growth, this effect is likely to be counteracted by extreme heat, they warn. Crops are especially vulnerable to heat around anthesis, the flowering period of the plant. “At this stage, extreme temperatures can lead to reduced pollen sterility and reduced seed set, greatly reducing the crop yield,” said lead scientist Delphine Deryng, from the Tyndall Centre for Climate Change Research at the University of East Anglia. Earlier studies found that climate change is likely to reduce maize yields by the end of the century under a “business-as-usual” greenhouse gas emissions scenario.