Quantcast

Latest Tipping point Stories

2008-12-02 13:28:58

A U.S. geologist is warning the Earth might soon undergo rapid and unpredictable climate changes that could negatively affect many species. Binghamton University Professor Tim Lowenstein's concerns are rooted in his and Professor Robert Demicco's discovery of nahcolite -- a rare carbonate mineral that formed during the Eocene Epoch, the warmest period on Earth during the last 65 million years. Lowenstein and Demicco said nahcolite suggests Eocene warming was concurrent with atmospheric carbon...

b02de33b5268c47fc69be7a35f60c6031
2008-05-28 19:50:00

Parallel to catastrophic event of 635 million years ago An abrupt release of methane, a powerful greenhouse gas, from ice sheets that extended to Earth's low latitudes some 635 million years ago caused a dramatic shift in climate, scientists funded by the National Science Foundation (NSF) report in this week's issue of the journal Nature. The shift triggered events that resulted in global warming and an ending of the last "snowball" ice age. The researchers believe that the methane was...

cb03c159266d3df91fb2fffc4e37dfe71
2007-08-21 06:50:00

SOCORRO, N.M. -- A New Mexico Tech scientist believes he has found a way to head off dangerous climate change. Oliver Wingenter said the idea is simple - fertilize the ocean so that more plankton can grow. Plankton growing in the ocean emits a gas known as dimethyl sulfide, or DMS, that once in the atmosphere, helps spur cloud formation. That, in turn, would cool the planet and offset some of the global warming caused by human emitted greenhouse gases, he said. World governments are looking...

be3fa8677b8241c604582d1901c1110b1
2007-05-30 19:05:00

NASA and Columbia University Earth Institute research finds that human-made greenhouse gases have brought the Earth's climate close to critical tipping points, with potentially dangerous consequences for the planet. From a combination of climate models, satellite data, and paleoclimate records the scientists conclude that the West Antarctic ice sheet, Arctic ice cover, and regions providing fresh water sources and species habitat are under threat from continued global warming. The research...

2006-08-31 20:08:56

By Mary Milliken LOS ANGELES (Reuters) - California made a bold move to curb global warming by passing on Thursday the first bill in the United States to cap man-made greenhouse gas emissions, an action state leaders hope will be copied across the country. Gov. Arnold Schwarzenegger, frustrated by lack of action from fellow Republican President George W. Bush on reducing heat-trapping gases, teamed up with the state's Democratic majority on the landmark bill. The bill cleared its...

1bb586c2c78a8149e35ed62ebab1c5221
2006-03-16 00:35:00

By Deborah Zabarenko WASHINGTON -- Human-fueled global warming has reached a "tipping point," according to a new survey of scientific research that found warming would continue even if greenhouse gas emissions halted immediately. "It would keep on warming even though we have stopped the cause, which is greenhouse gases from the combustion of fossil fuels," David Jhirad of the Washington-based World Resources Institute said on Wednesday. The rate of warming would be slower, Jhirad said in a...

2005-11-23 20:50:58

By Alister Doyle, Environment Correspondent OSLO (Reuters) - Rising temperatures trigger a runaway melt of Greenland's ice sheet, raising sea levels and drowning Pacific islands and cities from New York to Tokyo. In Siberia, the permafrost thaws, releasing vast frozen stores of greenhouse gases that send temperatures even higher. In the tropics, the Amazon rainforest starts to die off because of a warmer, drier climate. Such scenarios may read like the script of a Hollywood disaster...

2bf46d15fd2f25fdf47ad4c871d3f2e91
2005-11-23 20:50:00

By Alister Doyle, Environment Correspondent OSLO -- Rising temperatures trigger a runaway melt of Greenland's ice sheet, raising sea levels and drowning Pacific islands and cities from New York to Tokyo. In Siberia, the permafrost thaws, releasing vast frozen stores of greenhouse gases that send temperatures even higher. In the tropics, the Amazon rainforest starts to die off because of a warmer, drier climate. Such scenarios may read like the script of a Hollywood disaster movie but many...


Word of the Day
omphalos
  • The navel or umbilicus.
  • In Greek archaeology: A central boss, as on a shield, a bowl, etc.
  • A sacred stone in the temple of Apollo at Delphi, believed by the Greeks to mark the 'navel' or exact center-point of the earth.
'Omphalos' comes from the ancient Greek.
Related