Updated: 25 min 30 sec ago
Senator Mitch McConnell has begun an aggressive campaign to block President Obama’s climate agenda in statehouses and courtrooms, arenas far beyond his official authority.
The executive order represents the latest use of presidential power to address climate change, as Congress resists passing legislation.
With only about 10% of the sea floor mapped with high-resolution sonar from ships, scientists assembling global maps have to rely on an indirect method: using orbiting radar satellites to trace subtle bumps and depressions in the water surface, which mirror the shape of the sea floor. Even the most advanced map made by that technique has trouble identifying and locating seamounts less than 2 kilometers tall. But a new study demonstrates how a French radar instrument on an Indian satellite could greatly enhance seamount maps, putting submariners on safer courses while helping with climate science, fisheries science, and tsunami forecasts. Tests in the Pacific Ocean showed that the instrument, a radar altimeter called AltiKa, can spot seamounts as small as 1 kilometer tall. Researchers say it could boost the number of known seamounts from 10,000 to 100,000.
Author: Eric Hand
UK Only Article:
The caliphate cracks
C0<sub>2</sub> and the climate
A ray of hope in the debate about climate change
FOR years, it seemed like carbon-dioxide emissions rose relentlessly, whatever the world’s level of economic activity and however much countries spent on no- or low-carbon energy. Now, though, that depressing fact may be changing.
The International Energy Agency (IEA), made up mostly of energy-consuming rich countries, reckons worldwide emissions of carbon dioxide in 2014 were the same as in 2013. The only occasions CO2 emissions have actually fallen were in the early 1980s and 2008, both periods of economic contraction, but this is the first time for many years that the world economy has grown (up by 3.3% according to the IMF) and emissions have not risen too. In the European Union, GDP went up by 1.4% last year but CO2 emissions from energy use fell by 6%. Over the past five years GDP among all rich countries has risen by 7% but CO2 emissions from energy have fallen by 4%, offsetting a rise in ...<div class="og_rss_groups"></div>
Electric vehicles are cool, research shows. Literally. A new study adds more fuel to the already hot debate about whether electric vehicles are more environmentally friendly than conventional vehicles by uncovering two hidden benefits.
There will be a lot more carbon released from thawing permafrost than the amount taken in by more Arctic vegetation, according to new computer simulations. The findings are from an Earth system model that is the first to represent permafrost processes as well as the dynamics of carbon and nitrogen in the soil. Simulations using the model showed that by the year 2300, if climate change continues unchecked, the net loss of carbon to the atmosphere from Arctic permafrost would range from between 21 petagrams and 164 petagrams. That's equivalent to between two years and 16 years of human-induced CO2 emissions.
The Amazon is losing its capacity to absorb carbon from the atmosphere, reveals he most extensive land-based study of the Amazon to date. From a peak of two billion tons of carbon dioxide each year in the 1990s, the net uptake by the forest has halved and is now for the first time being overtaken by fossil fuel emissions in Latin America.
Agricultural greenhouse gases (GHG) make up 8.1% of total U.S. GHG emissions. The dairy cattle farming industry is being challenged to reduce greenhouse gas emissions while maintaining or increasing profitability. Researchers now report that farms with lower carbon footprints and higher-producing cows are more profitable, a win-win situation for everyone, including the cows.
FOUR extra points of IQ, an extra year’s education and a significantly enhanced income at the age of 30. Those are the benefits of having been breast-fed, according a study just published in Lancet Global Health by Bernardo Horta of the Federal University of Pelotas, in Brazil, and his colleagues.
Previous research has suggested that breast-feeding has beneficial long-term effects. But Dr Horta’s work is particularly persuasive because it looks at adults rather than children and teenagers, and because it contradicts the suggestion that social class is a confounding variable, with rich mothers tending to breast-feed more than poor mothers do.
The participants in the study were among a group of Brazilians born in Pelotas in 1982. Following a cohort like this through their lives is an established method of medical research. It lets doctors test hypotheses that retrospective examination, relying on memory, cannot address reliably. In 2012 and 2013 Dr Horta managed to track down 3,493 members of the cohort whose diet as babies, including their consumption of breast milk, had been recorded at the time, ask them some questions, and...
Carbon nanotube (CNT) membranes have a bright future in addressing the world's growing need to purify water from the sea, researchers say. "Currently, about 400 million people are using desalinated water and it has been projected that by 2025, 14 percent of the global population will be forced to use sea water,"according to experts. Engineered CNT membranes have the potential to tackle the current and future challenges in water purification.
Al Gore has warned of the dangers of climate change for years. Now he’s found a new role: prophet of possibility.
The warm soft folds of the intestines are teeming with thousands of species of bacteria that help break down food, synthesize vitamins, regulate weight and resist infection. If they're so key to health, what factors shape an individual's gut microbial makeup? Previous studies have pointed to the food we eat, the drugs we take, genetics, even house dust. Now, a new study in baboons suggests that relationships may play a role, too.
The popular response to questions about climate change and global warming seems to be: I’m not a scientist.
NASA is beginning work on a new satellite mission that will extend critical climate measurements of Earth’s oceans and atmosphere and advance studies of the impact of environmental changes on ocean health, fisheries and the carbon cycle.
A report alleges that after Florida Gov. Rick Scott took office, state officials were barred from using the term “climate change.”
A team of investors, development organizations, conservationists, economists, and ecologists have published six natural science principles to ensure success of Payments for Ecosystem Services, mechanisms that have helped preserve carbon stocks stored in Madagascar's rainforests, maintain wildlife populations important for tourism in Tanzania, and protect watersheds in France by working with local farmers.
An international research team has shed new light on the diet of some of the earliest recorded humans in Sri Lanka. The researchers analyzed the carbon and oxygen isotopes in the teeth of 26 individuals, with the oldest dating back 20,000 years. They found that nearly all the teeth analyzed suggested a diet largely sourced from the rainforest.
Capturing carbon from power plants will likely be necessary in the future to avoid the worst effects of climate change, but current technologies are very expensive. Chemists have now developed a new material, a diamine-appended metal-organic framework, that captures carbon dioxide with much reduced energy costs compared to today's technologies, potentially lowering the cost of capturing and sequestering this greenhouse gas.
The human-dominated geological epoch known as the Anthropocene probably began around the year 1610, with an unusual drop in atmospheric carbon dioxide and the irreversible exchange of species between the New and Old Worlds, according to new research.
The increasing strength of winds over the Southern Ocean has extended its ability to absorb carbon dioxide, effectively delaying the impacts of global warming. New research found the intensifying wind over that ocean increased the speed and energy of eddies and jets. The increased movement and overturning of these eddies and jets has accelerated the carbon cycle and driven more heat into the deep ocean.