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News about environmental issues. Latest "Green" and sustainable technologies news.

Particles pull last drops of oil from well water

Engineers develop magnetic nanoparticles that separate the last droplets of oil from produced water at wells.

When viruses infect phytoplankton, it can change the clouds

Microscopic plant-like organisms called phytoplankton support the diversity of life in the ocean. Scientists now report that one species, Emiliania huxleyi, and a virus closely associated with it, might be responsible for changes in cloud properties as well. When infected, E. huxleyi releases its chalky shell into the air, where it acts as an aerosol reflecting sunlight and even affecting cloud creation and movement.

Natural refrigerant replacements could reduce energy costs and conserve the environment

The 1987 Montreal Protocol and the 1997 Kyoto Protocol called for countries around the world to phase out substances that deplete the ozone layer, but many HVAC systems still use synthetic refrigerants that violate those international agreements and inflict environmental damage. Recently, researchers investigated how natural refrigerants could be used in geothermal heat pumps to reduce energy consumption and operating costs.

Europe needs coastal adaptation measures to avoid catastrophic flooding by the end of the century

Coastal floods could impact up to 3.65 million people every year in Europe by 2100, according to a new study.

Algorithm provides early warning system for tracking groundwater contamination

Scientists have developed a low-cost method for real-time monitoring of pollutants using commonly available sensors.

Scientists trace atmospheric rise in CO2 during deglaciation to deep Pacific Ocean

How carbon made it out of the ocean and into the atmosphere has remained one of the most important mysteries of science. A new study, provides some of the most compelling evidence for how it happened -- a 'flushing' of the deep Pacific Ocean caused by the acceleration of water circulation patterns that begin around Antarctica.

Converting carbon dioxide into methane or ethane selectively

Researchers have developed high-efficiency photocatalysts that convert carbon dioxide into methane or ethane with graphene-covered reduced titanium dioxide. The finding is expected to be utilized in the carbon dioxide reduction and recycling industries.

Does rain follow the plow?

There are many factors that play a role in whether or not it rains, and new research shows that human activity may be one of them.

North American diets require more land than we have, study finds

Researchers found that if the global population followed the United States Department of Agriculture's dietary guidelines, there would not be enough land to provide the food required.

Environmental regulations drove steep declines in US factory pollution

A new study by economists shows that between 1990 and 2008, air pollution levels plummeted. The evidence shows that environmental regulation and the associated cleanup of production processes played important roles in those steep declines. Manufacturers are producing the same types of goods, but they've taken significant steps to clean up their production processes, the authors say.

The underestimated cooling effect on the planet from historic fires

Historic levels of particles in the atmosphere released from pre-industrial era fires, and their cooling effect on the planet, may have been significantly underestimated according to a new study.

Effective method to control algae growth on Hawaiian coral reefs

Researchers have found a management approach that combining manual removal and outplanting native urchin was effective at reducing invasive, reef smothering macroalgae by 85 percent on a coral reef off O'ahu, Hawai'i.

For the first time, scientists are putting extinct mammals on the map

Researchers have produced the most comprehensive family tree and atlas of mammals to date, connecting all living and recently extinct mammal species (nearly 6,000 in total) and overturning many previous ideas about global patterns of biodiversity. The atlas shows where species occur today as well as where they would occur, if they had not been driven away or extinct.

Where do crows go in winter?

'Partial migration' -- where some individuals within a population migrate and some don't -- is common among birds, but scientists know very little about how it actually works. A new study tracks where American Crows go during the winter and shows that while individuals are consistent in whether they migrate or stay put, partial migration might give them enough flexibility to adapt to changing environmental conditions.

Good news for fishermen: Browning impacts fish less than expected

Water color is getting darker in lakes across the planet. This phenomenon, known as 'browning,' was anticipated to cause widespread declines in fish populations. A new study finds that the number of fish populations impacted by browning is smaller than previously believed.


Environmental News - NaturesList.org