Climate

Coral bleaching may be over-estimated
December 29, 2010 06:33 AM - Tom Marshall, Planet Earth Online

Problems with how scientists communicate with the media and in how reefs' health is assessed have created a skewed public understanding of coral bleaching, according to a new study. Coral bleaching is a widespread phenomenon in which corals lose their vivid colours. It's a major concern to conservationists, as it can be triggered by rapid environmental change and sometimes presages the death of whole reefs, along with the complex ecosystems they support. But the researchers suggest we need to take a more complex view of the matter - bleaching isn't always a bad thing. 'We go out to Indonesia twice a year, and in spring when the waters are warmest the reefs are always bleached,' says Dr David Suggett, a marine biologist at the University of Essex's Coral Reef Research Unit and co-author of the paper, published in Global Change Biology.

Wheat Poised to Weather Climate Change
December 28, 2010 11:56 AM - Jessica Marshall, Discovery News

With climate change predicted to alter precipitation and raise temperatures in North American grain-growing regions by 3 to 4 degrees Celsius (about 5 to 7 degrees Fahrenheit) by the end of the century, crops in the future will face dramatically different growing conditions than they do today. But a new study shows that over the last century and a half, North American wheat crops spread into regions with even wider temperature and precipitation differences than will arise over the next century. This analysis suggests it will be possible to adapt to new wheat-growing conditions.

Drilling Project in the Dead Sea Aimed at Climate History and History of Humankind
December 23, 2010 03:40 PM - Editor, Science Daily

ScienceDaily (Dec. 22, 2010) — About 50 miles from Bethlehem, a drilling project is determining the climate and earthquake activity of the area. Scientists from eight nations are examining the ground below the Dead Sea, by placing a borehole in this deepest basin in the world.

Permian Recovery
December 22, 2010 11:54 AM - Andy Soos, ENN

250 million years ago there was a world wide extinction event where 96% of all marine species were exterminated. Most of this event is unknown. Only one in every ten species survived, and these formed the basis for the recovery of life in the subsequent time period, called the Triassic. A new fossil site – at Luoping in Yunnan Province – provides a new window on that recovery, and indicates that it took about 10 million years for a fully-functioning new ecosystem to develop. During that time window, the new ecosystem evolved and changed until it stabilized.

Europe moves ahead on Cap & Trade, Japan seen shelving carbon emission trading scheme
December 22, 2010 06:49 AM - Kiyoshi Takenaka, Reuters, TOKYO

Japan is likely to shelve a plan to introduce carbon emissions trading as the troubled ruling Democratic Party bows to powerful business groups still recovering from a costly downturn. If confirmed, it would be a massive reversal by the party, which has backed one of the toughest emissions reduction targets of any major economy and said emissions trading was a key way to achieve that goal and drive greater energy efficiency at home. It would also be a blow to hopes more top greenhouse gas polluting nations outside the European Union would usher in emissions trading, after efforts in the United States and Australia were shelved.

River Sources of Green House Gases
December 21, 2010 03:19 PM - Andy Soos, ENN

Nitrous oxide, commonly known as laughing gas, is a chemical compound with the formula N2O. At room temperature, it is a colorless non-flammable gas, with a slightly sweet odor and taste. Nitrous oxide is a greenhouse gas, accounting for around 6% of the estimated heating effect of greenhouse gases in the atmosphere. According to 2006 data from the United States Environmental Protection Agency, industrial sources make up only about 20% of human caused industrial sources. Other human activity may account for 30%; tropical soils and oceanic release account for 70%. Human-caused nitrogen loading to river networks is a potentially important source of nitrous oxide emission to the atmosphere which may have been severely underestimated. It happens via a microbial process called denitrification, which converts nitrates to nitrous oxide and other gases.

Summary of the 2010 North Atlantic Hurricane Season
December 21, 2010 11:38 AM - David A Gabel, ENN

The 2010 hurricane season in the north Atlantic has come and gone. Although, the US was hardly touched by this year's storms, it turns out that 2010 was one of the busiest hurricane seasons on record. There were 19 named storms, tied for the third highest on record (1887 and 1995). Of these, 12 became hurricanes, and five reached major hurricane status of Category 3 or higher.

Heading Towards a World without Corals
December 20, 2010 09:23 AM - David A Gabel, ENN

Every year brings new accounts of coral bleaching in the tropical oceans. Even the largest living structure on Earth, the Great Barrier Reef off the coast of Australia, is under threat. According to marine scientist, J.E.N.Veron, in a couple generations coral reefs will no longer exist. Unless of course, humans find a different way to live that will not pollute the waters.

Decline of West Coast Fog Brought Higher Coastal Temperatures Last 60 Years
December 20, 2010 08:04 AM - Editor, Science Daily

Fog is a common feature along the West Coast during the summer, but a University of Washington scientist has found that summertime coastal fog has declined since 1950 while coastal temperatures have increased slightly.

Cap & trade, European style
December 20, 2010 06:45 AM - EurActive

A new regulatory regime for dispensing around 100 billion euros of carbon permits has been approved by EU regulators, granting steelmakers and oil refineries free emission allowances in an effort to shield them from international competition after 2012. Fears that tighter controls on CO2 emissions in Europe will drive factories to relocate abroad has led the EU to grant sweeping exemptions for industries deemed to be at risk. Existing proposals for the permits to be allocated according to carbon intensity "benchmarks" were approved with only slight modifications by the European Commission on 15 December.

First | Previous | 330 | 331 | 332 | 333 | 334 | Next | Last