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Results 41 - 60 of 206.


Environment - Earth Sciences - 23.09.2013
Global warming to drive greater risk for severe thunderstorms, Stanford research finds
Global warming to drive greater risk for severe thunderstorms, Stanford research finds
Severe thunderstorms, often exhibiting destructive rainfall, hail and tornadoes, are one of the primary causes of catastrophic losses in the United States. New climate models suggest a robust increase in these types of storms across the country. In 2012, 11 weather disasters in the United States crossed the billion-dollar threshold in economic losses.

Environment - 23.09.2013
Smouldering peat fires may contribute to climate change
New research into smouldering wildfires in the UK has found that they could be a contributor to climate change. A team from the University of Glasgow's School of Interdisciplinary Studies, studied an area in the Scottish Highlands that had a peat fire which lasted for longer than a month. The wildfires kill all vegetation and effectively sterilise the area.

Environment - Earth Sciences - 19.09.2013
Got calcium? Mineral key to restoring acid-damaged forests
Got calcium? Mineral key to restoring acid-damaged forests
Calcium can do much more than strengthen bones. The mineral is a critical nutrient for healthy tree growth, and new research shows that adding it to the soil helps reverse the decades-long decline of forests ailing from the effects of acid rain. The paper, published today (Thursday, Sept. 19), in the journal Environmental Science and Technology (EST) Letters , and led by John Battles, professor of forest ecology at the University of California, Berkeley, also presents strong evidence that acid rain impairs forest health.

Life Sciences - Environment - 18.09.2013
Even low-level PCBs change bird songs
Even low-level PCBs change bird songs
It may not kill them outright, but low-level PCB (polychlorinated biphenyls) contamination disrupts how some birds sing their songs, report Cornell researchers. Their seven-year study is published in the September issue of the science journal PLOS ONE. Before the chemicals were banned in the United States in 1979, PCBs were widely used in the manufacture of electrical devices, because they can withstand extremely high temperatures.

Environment - 18.09.2013
Climate change news reports focus on 'disaster' or 'uncertainty'
Climate change news reports focus on 'disaster' or 'uncertainty'
An Oxford University study shows that recent newspaper articles covering climate change are centred on narratives about disaster and uncertainty. Researchers from Reuters Institute for the Study of Journalism analysed 350 articles about climate change between 2007 and 2012 published by three different newspaper titles in six countries (UK, France, Australia, India, Norway and the USA).

Environment - Astronomy / Space Science - 17.09.2013
Stronger winds explain puzzling growth of sea ice in Antarctica
Stronger winds explain puzzling growth of sea ice in Antarctica
Much attention is paid to melting sea ice in the Arctic. But less clear is the situation on the other side of the planet. Despite warmer air and oceans, there's more sea ice in Antarctica now than in the 1970s - a fact often pounced on by global warming skeptics. The latest numbers suggest the Antarctic sea ice may be heading toward a record high this year.

Environment - Administration - 16.09.2013
Unprecedented Measurements Provide Better Understanding of Methane Emissions During Natural Gas Production
Completion emissions are lower than previously estimated; Data show emissions from pneumatic controllers and equipment leaks are higher than EPA national emission projections; Estimates of total emissions are similar to the most recent EPA national inventory of methane emissions from natural gas production.

Environment - Astronomy / Space Science - 15.09.2013
Achilles’ heel of ice shelves is beneath the water, scientists reveal
New research has revealed that more ice leaves Antarctica by melting from the underside of submerged ice shelves than was previously thought, accounting for as much as 90 per cent of ice loss in some areas. Iceberg production and melting causes 2,800 cubic kilometres of ice to leave the Antarctic ice sheet every year.

Environment - Life Sciences - 12.09.2013
The overlooked effects of global change
Although the Earth is in the midst of one of the largest and most rapid ever reductions in biological diversity, we may be overlooking some of the most important aspects. That's the conclusion of a new path-finding study by University researchers and the Leibnitz Institute of Freshwater Ecology in Berlin.

Life Sciences - Environment - 12.09.2013
Rested elephants make more babies
New study shows rested mother elephants produce longer-lived offspring Unique dataset from 1948-2000 spanning five generations of elephants Baby elephants have a greater chance of survival if they are born at certain times of the year, according to experts from the University of Sheffield. Elephants live in a seasonal environment, but unlike a lot of species do not have a single breeding season.

Life Sciences - Environment - 11.09.2013
Early-warning system to prevent fishery collapse
MINNEAPOLIS / ST. PAUL (09/12/2013) —Threats from overfishing can be detected early enough to save fisheries- and livelihoods -with minimal adjustments in harvesting practices, a new study by researchers in the University of Minnesota's College of Biological Sciences shows. The work indicates that a healthy fishery can be maintained the way a skillful captain steers an oil tanker: by small course corrections that prevent disaster far ahead.

Life Sciences - Environment - 11.09.2013
Selection drives functional evolution of large enzyme families
Researchers at Umeň University, together with researchers at the Institute of Botany, Chinese Academy of Sciences, show in a new study how natural selection drives functional evolution of a large protein family in conifer trees. The study sheds light on the mechanisms and adaptive significance of gene family evolution.

Environment - Life Sciences - 11.09.2013
Jurassic jaws: how ancient crocodiles flourished during the age of the dinosaurs
New research has revealed the hidden past of crocodiles, showing for the first time how these fierce reptiles evolved and survived in a dinosaur dominated world. While most modern crocodiles live in freshwater habitats and feed on mammals and fish, their ancient relatives were extremely diverse - with some built for running around like dogs on land and others adapting to life in the open ocean, imitating the feeding behaviour of today's killer whales.

Environment - Earth Sciences - 09.09.2013
Breaking deep-sea waves reveal mechanism for global ocean mixing
Waves breaking over sandy beaches are captured in countless tourist photos. But enormous waves breaking deep in the ocean are seldom seen, although they play a crucial role in long-term climate cycles. A University of Washington study for the first time recorded such a wave breaking in a key bottleneck for circulation in the world's largest ocean.

Health - Environment - 06.09.2013
Stay healthy during pregnancy to keep lead levels low
New research from the Children of the 90s study at the University of Bristol shows that mothers who drank alcohol and coffee, smoked and had a coal fire in their home during pregnancy were likely to have higher levels of lead in their blood than women who didn't. Dietary calcium and iron seemed to have a protective effect.

Life Sciences - Environment - 05.09.2013
On genetic treasure island, voles show DNA antiquity
On genetic treasure island, voles show DNA antiquity
With its snubby, blunt nose, small, furry ears and short tail, the Orkney Islands vole may not seem significant, but it harbors genetic secrets that can help shed light on novel evolutionary and colonization processes.

Environment - 03.09.2013
Life purpose buffers bad moods triggered by diversity
Being in the minority in an ethnically diverse crowd is distressing, regardless of your ethnicity, unless you have a sense of purpose in life, reports a Cornell developmental psychologist. Anthony Burrow, assistant professor of human development in the College of Human Ecology, led the study, which was conducted on Chicago trains.

Environment - Life Sciences - 03.09.2013
Pest-eating birds mean money for coffee growers, Stanford biologists find
Pest-eating birds mean money for coffee growers, Stanford biologists find
This is the first time scientists have assigned a monetary value to the pest-control benefits rainforest birds can provide to agriculture. Their study could provide the framework for pest management that helps both farmers and biodiversity. In recent years, Stanford biologists have found that coffee growers in Costa Rica bolster bird biodiversity by leaving patches of their plantations as untouched rainforest.

Environment - Economics / Business - 03.09.2013
Developed countries use resources at greater rate than reported
3 September 2013 The amount of raw material needed to sustain developed countries' economies is significantly greater than current indicators suggest, a new Australian study has revealed. Published today in the Proceedings of the National Academy of Sciences, the findings demonstrate the need for policy makers to consider new accounting methods that more accurately track resource consumption.

Environment - Life Sciences - 29.08.2013
Moss growth in Antarctica linked to climate change
Increases in temperature on the Antarctic Peninsula during the latter part of the 20th century were accompanied by an acceleration in moss growth, scientists have learned. Writing in the journal Current Biology they describe the activity as unprecedented in the last 150 years.