Earth Changes
The fire at 301 Hale St. started about 3:30 a.m. after lightning hit a tree, causing the tree to split in half and fall on the house.
Before firefighters arrived, the homeowner, whose name was not immediately available, attempted to put out the blaze with an extinguisher and garden hose. It took firefighters another 20 minutes to douse the fire, which they were able to contain to an upstairs bedroom, Washington Assistant Fire Chief Randy Hurd said.
The finding does not change estimates of the oceans' total carbon uptake, but it reveals the surprisingly large role of tropical oceans and major rivers.
The tropical North Atlantic had been considered a net emitter of carbon from the respiration of ocean life. A 2007 study estimated that ocean's contribution to the atmosphere at 30 million tons of carbon annually.
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©iStockphoto |
Amazon River. |
The new study, appearing in PNAS Early Edition the week of July 21, finds that almost all the respiration is offset by organisms called diazotrophs, which pull nitrogen and carbon from the air and use them to make organic solids that sink to the ocean floor.
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©iStockphoto/Chuck Babbitt |
New research suggests there may be a workable way of reducing carbon dioxide levels in the atmosphere by adding lime to seawater. |
Shell is so impressed with the new approach that it is funding an investigation into its economic feasibility. 'We think it's a promising idea,' says Shell's Gilles Bertherin, a coordinator on the project. 'There are potentially huge environmental benefits from addressing climate change -- and adding calcium hydroxide to seawater will also mitigate the effects of ocean acidification, so it should have a positive impact on the marine environment.'
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©Albert Gerdes, MARUM/Bremen |
Researcher Julius Lipp, Ph.D., of Bremen University, Germany, with some of his samples. |
The authors: Kai-Uwe Hinrichs and Julius Lipp of the Center for Marine Environmental Sciences (MARUM) at University of Bremen, Germany; and Fumio Inagaki and Yuki Morono of the Kochi Institute for Core Sample Research at the Japan Agency for Marine-Earth Science and Technology (JAMSTEC) concluded that about 87 percent of the deep biosphere consists of Archaea.
The storm, with sustained winds of nearly 50 mph (85 kph), emerged from the Yucatan Peninsula over the warm waters of the Gulf of Mexico. A hurricane watch was issued for the southern Texas coast, the U.S. National Hurricane Center said.
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©REUTERS/NOAA/Handout |
A satellite image of Tropical Storm Dolly, taken on July 21, 2008. |
Dolly was 475 miles southeast of the border, where it was due to hit on Wednesday near Brownsville, well away from sensitive offshore drilling rigs and production platforms.
The United States has largely escaped the past two Atlantic hurricane seasons, with just one hurricane -- Humberto in November 2007 -- making landfall on its coasts.
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©Andrew Ryzhkov |
The North Atlantic circulation is part of thermohaline circulation that globally affects oceanic waters. |
Scientists from the Complutense University of Madrid (UCM) and the Potsdam-Institute for Climate Impact Research in Germany have carried out a study which identifies small alterations in the superficial sea winds as the factors with a key role in the abrupt climatic change that occurred over the last glacial period whose origin is not yet fully understood.
This study, carried out by researchers Marisa Montoya and Anders Levermann, concluded that there is a precise point from which a small variation in the speed of sea winds corresponds to a dramatic change in the Atlantic circulation intensity. According to Marisa Montoya, "If the glacial climate had been in the vicinity of that point, small wind changes could have caused sudden and significant climatic changes during that period".
"We could be seeing evolution occurring before our eyes. Watch this space!" says zoologist Menna Jones of the university.
Tasmanian devils live on the island of Tasmania, south of Australia. They weigh 20 to 30 pounds and were named devils by early European settlers because the furry black marsupials produce a fierce screech and can be bad-tempered.
Since 1996 a contagious form of cancer called devil facial tumor disease has been infecting these animals and is invariably fatal, causing death between the ages of 2 and 3.
In the past devils would live five to six years, breeding at ages two, three and four, but with the new disease, even females who breed at two may not live long enough to rear their first litter.
Eleven-year-old Rylee Robinson of McKinney, Texas found the bones on the shore of Longboat Key earlier this week while on vacation. Rylee told News First, "The skull was kind of scary, with humongous eye sockets, and spikes on its back." She said the skull still had flesh on it, and cartilage connecting the backbone to the skull.
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©Unknown |