Earth Changes
The Intergovernmental Panel on Climate Change is to unveil its latest assessment of the environmental threat posed by global warming on Friday.
As the panel meets, the planet is the warmest it has been in thousands of years - if not more - and international concern over what to do about it is at an all-time high.
Avian cholera affects birds so quickly that they have been known to sometimes literally drop out of the sky or die while swimming, according to the National Wildlife Health Center. Approximately 40 percent of the affected birds die; those who don't become carriers.
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CLIMATE change is real and set to cause dramatic temperature rises in the coming century, according to a leaked draft of a major United Nations report.
The study, by a panel of 2,500 scientists who advise the UN, is the most complete overview of climate-change science and will be published next month by the Intergovernmental Panel on Climate Change (IPCC) after a final review.
The IPCC's reports are regarded by many environmentalists as cautious, because the findings have to be agreed by member states including oil-producing countries such as Saudi Arabia.
The draft, which was leaked by scientific sources, says it is "very likely" - more than a 90 per cent chance - that human activities, led by burning fossil fuels, are to blame for warming since 1950. The previous report in 2001 said the link was "likely".
It projects temperatures will rise by 2-4.5C (3.6-8.1F) above pre-industrial levels, with a "best estimate" of a 3C (5.4F) rise, assuming carbon-dioxide levels are stabilising at about 45 per cent above current levels. The European Union says any temperature rise above 2C will cause "dangerous" changes.
The researchers found that dust particles from the desert regions in northern Africa can produce climate changes as far away as the northern Pacific Ocean. Large quantities of dust from North Africa are injected into the atmosphere by dust storms and rising air. Airborne dust absorbs sunlight and heats the atmosphere. The heating effect ripples through the atmosphere, affecting surface and air temperatures as the dust travels.
The IPCC report, due for release on Feb. 2 in Paris, draws on research by 2,500 scientists from more than 130 countries and has taken six years to compile.
"As soon as snow covered the earth, the brown bear that stayed awake all this time returned to his lair and fell asleep," the Moscow zoo's spokesman said Thursday as quoted by the ITAR-TASS news agency.