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The Lead

California drought linked to climate change

September 30, 2014 9:42 am | by Ker Than, Stanford Univ. | Videos | Comments

The atmospheric conditions associated with the unprecedented drought currently afflicting California are "very likely" linked to human-caused climate change, according to Stanford Univ. scientists. The team used a combination of computer simulations and statistical techniques to show that a persistent region of high atmospheric pressure hovering over the Pacific Ocean was likely to form from modern greenhouse gas concentrations.

Glaciers in the Grand Canyon of Mars?

September 30, 2014 8:56 am | News | Comments

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Wildlife populations plummet for 3,000 species

September 30, 2014 8:19 am | by John Heilprin, Associated Press | News | Comments

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Technology tracks tiniest pollutants in real time

September 26, 2014 8:23 am | by Brett Israel, Georgia Institute of Technology | News | Comments

Researchers may soon have a better idea of how tiny particles of pollution are formed in the atmosphere. These particles, called aerosols, are hazardous to human health and contribute to climate change, but researchers know little about how their properties are shaped by chemical reactions in the atmosphere. Unraveling this chemistry could someday lead to more effective policies to protect human health and the Earth’s climate.

The water in your bottle might be older than the sun

September 26, 2014 8:13 am | by Nicole Casal Moore, Univ. of Michigan | News | Comments

Up to half of the water on Earth is likely older than the solar system itself, Univ. of Michigan astronomers theorize. The researchers' work helps to settle a debate about just how far back in galactic history our planet and our solar system's water formed. Were the molecules in comet ices and terrestrial oceans born with the system itself—in the planet-forming disk of dust and gas that circled the young sun 4.6 billion years ago?

Building the framework for the future of biofuels

September 25, 2014 9:47 am | by Joe Kullman, Arizona State Univ. | News | Comments

For more than five years, Amy Landis, an engineering professor at Arizona State Univ.,  has led research that is revealing the potential rewards of developing large-scale biofuels production, as well as the potential drawbacks we would face in the effort. According to Landis, lands damaged by industrial waste or other pollutants could be restored sufficiently to support agriculture for growing bioenergy crops.

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Biochar alters water flow to improve sand, clay

September 25, 2014 8:00 am | by David Ruth, Rice Univ. | News | Comments

As more gardeners and farmers add ground charcoal, or biochar, to soil to both boost crop yields and counter global climate change, a new study by researchers at Rice Univ. and Colorado College could help settle the debate about one of biochar’s biggest benefits: the seemingly contradictory ability to make clay soils drain faster and sandy soils drain slower.

Study: Solar energy-driven process quickly reclaims tailings ponds

September 24, 2014 8:52 am | News | Comments

Cleaning up oil sands tailings has just gotten a lot greener thanks to a novel technique developed by Univ. of Alberta civil engineering professors that uses solar energy to accelerate tailings pond reclamation efforts by industry. Instead of using ultraviolet lamps as a light source to treat the water affected by oil sands processes, sunlight alone treats just as efficiently but at a much lower cost.

Plant-based building materials may boost energy savings

September 23, 2014 2:04 pm | by Leslie Minton, Univ. of North Texas | News | Comments

Over a three-year period, Univ. of North Texas researchers developed and tested structured insulated panel building materials made from kenaf, a plant in the hibiscus family that is similar to bamboo. Kenaf fibers are an attractive prospect because they offer the same strength to weight ratio as glass fibers. The researchers found that the kenaf materials, including composite panels, provide up to 20% energy savings.

NASA's Maven spacecraft enters Mars orbit

September 22, 2014 10:26 am | by Marcia Dunn, AP Aerospace Writer | News | Comments

The robotic explorer Maven successfully slipped into orbit around Mars late Sunday night. Now the real work begins for the $671 million mission, the first dedicated to studying the Martian upper atmosphere and the latest step in NASA's bid to send astronauts to Mars in the 2030s. Researchers hope to learn where all the red planet's water went, along with the carbon dioxide that once comprised an atmosphere thick enough to hold moist clouds.

China, U.S., India push world carbon emissions up

September 22, 2014 9:42 am | by Seth Borenstein, AP Science Writer | News | Comments

Spurred chiefly by China, the United States and India, the world spewed far more carbon pollution into the air last year than ever before. The world pumped an estimated 39.8 billion tons of carbon dioxide into the air last year by burning coal, oil and gas. That is 778 million tons or 2.3% more than the previous year. World leaders gather this week to discuss how to reduce heat-trapping gases. 

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Engineers call for national approach to flooding

September 22, 2014 9:07 am | by Geoff Mulvihill, Associated Press | News | Comments

The American Society of Civil Engineers are urging Congress and the Obama Administration to develop a national strategy for mitigating flood risks, saying the U.S. has not fully heeded lessons from Hurricane Katrina and Superstorm Sandy. A sustainable way to pay for infrastructure maintenance and updates to help manage floods is needed, they say, and they will release their full recommendations Monday in Philadelphia.

Artificial “beaks” collect water from fog: A drought solution?

September 18, 2014 1:20 pm | News | Comments

By opening and closing their beaks, shorebirds drive food-containing liquid drops into their throats. Researchers have mimicked this phenomenon by building simple, fog-collecting, rectangular “beaks” out of glass plates connected by a hinge on one side. Providing a large surface area where beads of fog condense, the “beak” improved collection rates over alternatives by up to 900 times.

Advanced molecular “sieves” could be used for carbon capture

September 18, 2014 12:33 pm | News | Comments

Researchers from the Univ. of Cambridge have developed advanced molecular synthetic membranes, or “sieves”, which could be used to filter carbon dioxide and other greenhouse gases from the atmosphere. The sieves were made by heating microporous polymers using low levels of oxygen which, produces a tougher and far more selective membrane that is still relatively flexible.

Boosting global corn yields depends on improving nutrient balance

September 18, 2014 7:40 am | by Natalie van Hoose, Purdue Univ. | News | Comments

Ensuring that corn absorbs the right balance of nitrogen, phosphorus and potassium is crucial to increasing global yields, a Purdue and Kansas State Univ. study finds. A review of data from more than 150 studies from the U.S. and other regions showed that high yields were linked to production systems in which corn plants took up key nutrients at specific ratios.

Sampling Methods for Microanalysis

September 17, 2014 11:48 am | by Mary L. Stellmack, McCrone Associates Inc. | McCrone Associates, Inc. | Articles | Comments

In order to identify contaminants in industrial products, it’s sometimes necessary to send samples of the contaminated material to a laboratory for analysis. The choice of sampling method and the selection of a shipping container are critical to ensure that a representative sample is obtained, and no additional foreign material (FM) is added to the sample during transport to the laboratory.

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Early Earth less hellish than previously thought

September 16, 2014 7:53 am | by David Salisbury, Vanderbilt Univ. | News | Comments

Conditions on Earth for the first 500 million years after it formed may have been surprisingly similar to the present day, complete with oceans, continents and active crustal plates. This alternate view of Earth’s first geologic eon, called the Hadean, has gained substantial new support from the first detailed comparison of zircon crystals that formed more than 4 billion years ago with those formed contemporaneously in Iceland.

Polonium’s most stable isotope gets revised half-life measurement

September 12, 2014 9:14 am | by NIST | News | Comments

Scientists at NIST have determined that polonium-209, the longest-lived isotope of this radioactive heavy element, has a half-life about 25% longer than the previously determined value, which had been in use for decades. The new NIST measurements could affect geophysical studies such as the dating of sediment samples from ocean and lake floors.

Microscopic diamonds suggest cosmic impact responsible for major period of climate

September 11, 2014 4:53 pm | News | Comments

A new study published in The Journal of Geology provides support for the theory that a cosmic impact event over North America some 13,000 years ago caused a major period of climate change known as the Younger Dryas stadial, or “Big Freeze.”  The key to the mystery of the Big Freeze lies in nanodiamonds scattered across Europe, North America, and portions of South America.

The ozone hole has stabilized, but some questions remain

September 11, 2014 4:50 pm | News | Comments

The production and consumption of chemical substances threatening the ozone layer has been regulated since 1987 in the Montreal Protocol. Eight international expert reports have since been published, the most recent of which was presented on Sept. 10 at the United Nations Headquarters in New York. Model calculations reveal that by 2050 the ozone layer may return to its 1980 levels.

Seismic gap may be filled by an earthquake near Istanbul

September 11, 2014 7:56 am | by Jennifer Chu, MIT News Office | News | Comments

When a segment of a major fault line goes quiet, it can mean one of two things: The “seismic gap” may simply be inactive, or the segment may be a source of potential earthquakes, quietly building tension over decades until an inevitable seismic release. Researchers from Massachusetts Institute of Technology and Turkey have found evidence for both types of behavior on different segments of the North Anatolian Fault.

More health symptoms reported near “fracking” natural gas extraction

September 10, 2014 8:07 am | by Jim Shelton, Yale Univ. | News | Comments

A Yale Univ.-led study has found a greater prevalence of health symptoms reported among residents living close to natural gas wells, including those drilled by hydraulic fracturing. The researchers conducted a random survey of 492 people in 180 households with ground-fed water wells in southwestern Pennsylvania, where natural gas extraction activity is significant.

Textbook theory behind volcanoes may be wrong

September 9, 2014 7:57 am | by Marcus Woo, Caltech | News | Comments

In the typical textbook picture, volcanoes, such as those that are forming the Hawaiian islands, erupt when magma gushes out as narrow jets from deep inside Earth. But that picture is wrong, according to a new study from researchers at Caltech and the Univ. of Miami. New seismology data are now confirming that such narrow jets don't actually exist.

Scientists apply biomedical technique to reveal changes in body of the ocean

September 9, 2014 7:33 am | News | Comments

For decades, doctors have developed methods to diagnose how different types of cells and systems in the body are functioning. Now scientists have adapted an emerging biomedical technique to study the vast body of the ocean. In recent work they have demonstrated that they can identify and measure proteins in the ocean, revealing how single-celled marine organisms and ocean ecosystems operate.

Sun-powered desalination for villages in India

September 8, 2014 7:51 am | by David L. Chandler, MIT News Office | News | Comments

Around the world, there’s more salty groundwater than fresh, drinkable groundwater. For example, 60% of India is underlain by salty water. Now an analysis by Massachusetts Institute of Technology researchers shows that a different desalination technology called electrodialysis, powered by solar panels, could provide enough clean, palatable drinking water to supply the needs of a typical village.

SAP Conference for Enterprise Portfolio & Project Management

September 5, 2014 2:26 pm | Events

Join T.A. Cook and SAP, at the annual SAP Conference for Enterprise Portfolio and Project Management (PPM), taking place in Coral Gables on November 11-13, 2014. At this event you will hear the very latest news, innovation, and best practices for enterprise portfolio and project management that will empower businesses to make better informed decisions.

Sequencing of fish reveals diverse molecular mechanisms underlying evolution

September 5, 2014 9:49 am | by John Toon, Georgia Institute of Technology | News | Comments

Researchers have sequenced the genomes and transcriptomes of five species of African cichlid fishes and uncovered a variety of features that enabled the fishes to thrive in new habitats and ecological niches within the Great Lakes of East Africa. The study helps explain the genetic basis for the incredible diversity among cichlid fishes and provides new information about vertebrate evolution.

Study links polar vortex chills to melting sea ice

September 3, 2014 9:02 am | by Seth Borenstein, AP Science Writer | News | Comments

Remember the polar vortex, the huge mass of Arctic air that can plunge much of the U.S. into the deep freeze? You might have to get used to it. A new study says that as the world gets warmer, parts of North America, Europe and Asia could see more frequent and stronger visits of that cold air. Researchers say that's because of shrinking ice in the seas off Russia.

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