Some major trucking companies are turning to natural gas to fuel their fleets, and to earn “green” credit among customers. But celebrating lower emissions could be premature. Researchers have found that converting heavy-duty trucks to run on natural gas could lead to negative climate impacts if steps are not taken to improve engine efficiency and reduce methane emissions from the fuel’s supply chain.
There are great hopes for the potential of coastal plants and seaweeds to store carbon and help...
The combination of global warming and shifting population means that by mid-century, there will...
Researchers have published results in Environmental Research Letters confirming strong warming in the upper troposphere, known colloquially as the tropospheric hot spot. The hot has been long expected as part of global warming theory and appears in many global climate models.
Climate helps drive the erosion process that exposes economically valuable copper deposits and shapes the pattern of their global distribution, according to a new study. Nearly three-quarters of the world's copper production comes from large deposits that form about 2 km beneath the Earth's surface, known as porphyry copper deposits.
Once a day, a wave as tall as the Empire State Building and as much as a hundred miles wide forms in the waters between Taiwan and the Philippines and rolls across the South China Sea. But on the surface, it is hardly noticed. These daily monstrosities are called “internal waves” because they are beneath the ocean surface and though scientists have known about them for years, they weren’t really sure how significant they were.
Technological advances that have reduced prices and improved efficiency of renewable energy have helped transform the politics around climate change since 2009 when an attempt to forge a global deal on reducing greenhouse gas emissions crashed in Copenhagen, the United Nations climate chief said Thursday.
As greater atmospheric carbon dioxide boosts sea temperatures, tropical corals face a bleak future. New climate model projections show that conditions are likely to increase the frequency and severity of coral disease outbreaks, reports a team of researchers led by Cornell Univ. scientists.
During the past decade, Antarctica's massive ice sheet lost twice the amount of ice in its western portion compared with what it accumulated in the east, according to Princeton Univ. researchers who came to one overall conclusion: The southern continent's ice cap is melting ever faster.
Global warming will eventually push 1 out of every 13 species on Earth into extinction, a new study projects. It won't quite be as bad in North America, where only 1 in 20 species will be killed off because of climate change or Europe where the extinction rate is nearly as small. But in South America, that forecasted heat-caused extinction rate soars to 23%, the worst for any continent.
The researchers found that sinking particles of stressed and dying phytoplankton release chemicals that have a jolting, steroid-like effect on marine bacteria feeding on the particles. The chemicals juice up the bacteria’s metabolism causing them to more rapidly convert organic carbon in the particles back into CO2 before they can sink to the deep ocean.
Flying in a plane is not only safer than driving a car, it's also better for the environment. In follow-up research from last year, a study found that it takes twice as much energy to drive than to fly.
A new study based on 1,000 years of temperature records suggests global warming is not progressing as fast as it would under the most severe emissions scenarios outlined by the Intergovernmental Panel on Climate Change (IPCC). The Duke-led study shows that natural variability in surface temperatures can account for observed changes in the recent rates of warming from decade to decade.
How does climate change affect the occurrence and distribution of species? This is a key question in the climate debate, and one that is hard to answer without information about natural variation in species abundance. Now researchers from Uppsala Univ. can, for the first time, give us a detailed picture of natural variation through study published in Current Biology.
Tropical forests play major roles in regulating Earth’s climate, but there are large uncertainties over how they’ll respond over the next 100 years as the planet’s climate warms. An expansive new project led by scientists from Lawrence Berkeley National Laboratory aims to bring the future of tropical forests and the climate system into much clearer focus.
The U.S. pledged to cut its greenhouse gas emissions up to 28% as part of a global treaty aimed at preventing the worst effects of climate change, the White House said. The Obama administration's contribution to the treaty, which world leaders expect to finalize in December, codifies a commitment President Barack Obama first made late last year in Beijing.
Scientists have found a way to measure the unseen toll that environmental stress places on living creatures, showing that they can rev up their metabolism to work more than twice as hard as normal to cope with change. Stresses from climate change such as rising temperatures and increasing ocean acidity can move an organism closer and closer to the brink of death without visible signs.
A new study led by Scripps Institution of Oceanography at the Univ. of California, San Diego, researchers has revealed that the thickness of Antarctica’s floating ice shelves has recently decreased by as much as 18% in certain areas over nearly two decades, providing new insights on how the Antarctic ice sheet is responding to climate change.
Deep below the ice, far from the playful penguins and other animals that bring tourists to Antarctica, is a cold and barren world that by all indications should be completely void of life. But recently, scientists researching melting ice watched a half-foot-long (15-cm) fish swim by. Not long after that, they saw shrimp-like creatures.
The world could suffer a 40% shortfall in water in just 15 years unless countries dramatically change their use of the resource, a U.N. report warned Friday. Many underground water reserves are already running low, while rainfall patterns are predicted to become more erratic with climate change.
Incessant mountain rain, snow and melting glaciers in a comparatively small region of land that hugs the southern Alaska coast and empties fresh water into the Gulf of Alaska would create the sixth largest coastal river in the world if it emerged as a single stream, a recent study shows.
A U.S. envoy for climate change said Friday that China and the U.S. are working more closely than ever ahead of a conference this year in Paris that raises hopes for a global plan to cut greenhouse emissions. Special Envoy Todd Stern told reporters in Beijing that he still expects hard negotiations between many countries in advance of the U.N. summit.
To combat global climate change caused by greenhouse gases, alternative energy sources and other types of environmental recourse actions are needed. There are a variety of proposals that involve using vertical ocean pipes to move seawater to the surface from the depths in order to reap different potential climate benefits.
There’s a carbon showdown brewing in the Arctic as Earth’s climate changes. On one side, thawing permafrost could release enormous amounts of long-frozen carbon into the atmosphere. On the opposing side, as high-latitude regions warm, plants will grow more quickly, which means they’ll take in more carbon from the atmosphere. Whichever side wins will have a big impact on the carbon cycle and the planet’s climate.
Researchers at The Univ. of Texas at Austin have discovered two seafloor gateways that could allow warm ocean water to reach the base of Totten Glacier, East Antarctica’s largest and most rapidly thinning glacier. The discovery probably explains the glacier’s extreme thinning and raises concerns about how it will affect sea level rise.
Scientists have long known that Arctic lakes emit methane, which comes primarily from the action of microbes in the water and lake sediments. Global warming may ramp up the flow of methane from groundwater into Arctic lakes, allowing more of the potent greenhouse gas to bubble out into the atmosphere.
Researchers have identified a circadian clock gene that helps a key crop plant to withstand extreme cold and salty conditions, which could help to develop hardier crops with improved yield. The next step is to extend these studies to corn, rice, wheat and soybean, the world's four major crops.
China's severe environmental problems and government pledges to fix them have dominated the start of the country's annual legislative meeting, as leaders try to ease public worries about air, water and soil contamination that threaten to derail the country's economic rise and cast doubts on the ruling Communist Party.
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