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The Lead

Study: Ancient Earth made its own water

December 17, 2014 10:06 am | by Pam Frost Gorder, Ohio State Univ. | News | Comments

A new study is helping to answer a longstanding question that has recently moved to the forefront of Earth science: Did our planet make its own water through geologic processes, or did water come to us via icy comets from the far reaches of the solar system? The answer is likely both.

New tracers can identify coal ash contamination in water

December 16, 2014 2:20 pm | by Tim Lucas, Duke Univ. | News | Comments

Duke Univ. scientists have developed new forensic tracers to identify coal ash contamination in...

Past global warming similar to today’s, but in two pulses

December 15, 2014 1:54 pm | by Jim Erickson, University of Michigan | News | Comments

The rate at which carbon emissions warmed Earth's climate almost 56 million years ago resembles...

How climate change could leave cities in the dark

December 15, 2014 11:30 am | by Jill Rosen, Johns Hopkins Univ. | News | Comments

Cities like Miami are all too familiar with hurricane-related power outages. But a Johns Hopkins...

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Image: Clouds fill Grand Canyon

December 12, 2014 10:27 am | by Associated Press | News | Comments

A rare weather phenomenon at the Grand Canyon had visitors looking out on a sea of thick clouds just below the rim. The total cloud inversion is expected to hang inside the canyon throughout Thursday.             

Is natural gas a “bridge” to a hotter future?

December 8, 2014 3:47 pm | by Carnegie Institute | News | Comments

Natural gas power plants produce substantial amounts of gases that lead to global warming. Replacing old coal-fired power plants with new natural gas plants could cause climate damage to increase over the next decades, unless their methane leakage rates are very low and the new power plants are very efficient.

Study: Early warning signals of abrupt climate change

December 8, 2014 9:47 am | by Univ. of Exeter | News | Comments

A new study by researchers at the Univ. of Exeter has found early warning signals of a reorganization of the Atlantic oceans’ circulation which could have a profound impact on the global climate system. The researchused a simulation from a highly complex model to analyze the Atlantic Meridional Overturning Circulation, an important component of the Earth’s climate system.

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Study: Underground helium travels to Earth’s surface via aquifers

December 8, 2014 9:14 am | by Louise Lerner, Argonne National Laboratory | News | Comments

Before it can put the party in party balloons, helium is carried from deep within the Earth’s crust to the surface via aquifers. Aquifers contain water that has filtered there over hundreds of millennia. Using an atom trap built at Argonne National Laboratory to date the water in a deep South American aquifer, scientists tracked the rate at which helium pooled in the aquifers.

Researchers to use algae to clean up mine water

December 5, 2014 10:04 am | by Univ. of Bristol | News | Comments

A groundbreaking research project by the GW4 Alliance aims to clean up water from a Cornish tin mine, using algae to harvest the precious heavy metals and produce biofuel at the same time. GW4 brings together the South West and Wales’ four leading, research-intensive universities: Bath, Bristol, Cardiff and Exeter.

NIR Drills Into the Energy Industry

December 4, 2014 2:16 pm | by Lindsay Hock, Managing Editor | Articles | Comments

Hydrocarbon exploration by definition is the search by geologists or geophysicists for hydrocarbon deposits beneath the Earth’s surface, such as oil (petroleum) and natural gas. In such exploration, the oil and gas industry drills holes into the Earth’s surface to extract the petroleum or natural gas. However, such exploration is expensive, not to mention a high-risk operation.

Buckyballs enhance carbon capture

December 4, 2014 7:37 am | by Mike Williams, Rice Univ. | News | Comments

Rice Univ. scientists have discovered an environmentally friendly carbon-capture method that could be equally adept at drawing carbon dioxide emissions from industrial flue gases and natural gas wells. The Rice laboratory of chemist Andrew Barron revealed in a proof-of-concept study that amine-rich compounds are highly effective at capturing the greenhouse gas when combined with carbon-60 molecules.

Small volcanoes make a dent in global warming

December 3, 2014 11:04 am | by David L. Chandler, MIT News Office | News | Comments

New research shows that relatively small volcanic eruptions can increase aerosol particles in the atmosphere, temporarily mitigating the global warming caused by greenhouse gases. The impact of such smaller eruptions has been underestimated in climate models, the researchers say, and helps to account for a discrepancy between those models and the actual temperatures observed over the last 15 years.

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CO2 warming effects felt just a decade after emitted

December 3, 2014 10:54 am | by Institute of Physics | News | Comments

It takes just 10 years for a single emission of carbon dioxide to have its maximum warming effects on the Earth. This is according to researchers at the Carnegie Institute for Science who have dispelled a common misconception that the main warming effects from a carbon dioxide emission will not be felt for several decades.

Atmospheric carbon dioxide used for energy storage products

December 2, 2014 4:28 pm | by David Stauth, Oregon State Univ. | News | Comments

Chemists and engineers at Oregon State Univ. have discovered a fascinating new way to take some of the atmospheric carbon dioxide that’s causing the greenhouse effect and use it to make an advanced, high-value material for use in energy storage products. This innovation in nanotechnology won’t soak up enough carbon to solve global warming, but it will provide a low-cost way to make nanoporous graphene for use in supercapacitors.

Computational tools help identify microbes in complex environmental samples

December 2, 2014 9:52 am | by John Toon, Georgia Institute of Technology | News | Comments

Microbes of interest to clinicians and environmental scientists rarely exist in isolation. Organisms essential to breaking down pollutants or causing illness live in complex communities, and separating one microbe from hundreds of companion species can be challenging for researchers seeking to understand environmental issues or disease processes.

Most of Earth’s carbon may be hidden in planet’s inner core

December 2, 2014 8:24 am | by Jim Erickson, University of Michigan | News | Comments

As much as two-thirds of Earth's carbon may be hidden in the inner core, making it the planet's largest carbon reservoir, according to a new model that even its backers acknowledge is "provocative and speculative." In a recent paper, Univ. of Michigan researchers and their colleagues suggest that iron carbide, Fe7C3, provides a good match for the density and sound velocities of Earth's inner core under the relevant conditions.

AUV provides first 3-D images of underside of Antarctic sea ice

November 26, 2014 8:03 am | by Peter West, NSF | News | Comments

A National Science Foundation-funded research team has successfully tested an autonomous underwater vehicle (AUV) that can produce high-resolution, 3-D maps of Antarctic sea ice. SeaBED, as the vehicle is known, measured and mapped the underside of sea-ice floes in three areas off the Antarctic Peninsula that were previously inaccessible.

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Trace Analysis of Carbon Dioxide in High-Purity Hydrofluorocarbon

November 25, 2014 4:15 pm | by Zhuangzhi “Max” Wang, Clifford M. Taylor, Shimadzu Scientific Instruments, Columbia, Md. | Articles | Comments

Fluorocarbon, a generic term for organic compounds with carbon-fluorine (C-F) bonding, is a chemical material used as a refrigerant in refrigerators and freezers and air conditioners in cars, buses, other vehicles and buildings. It’s also used as a cleaning agent for electronic components and precision parts.

Salinity matters when it comes to sea level changes

November 21, 2014 9:33 am | by Anne M. Stark, Lawrence Livermore National Laboraotry | News | Comments

Using ocean observations and a large suite of climate models, Lawrence Livermore National Laboratory (LLNL) scientists have found that long-term salinity changes have a stronger influence on regional sea level changes than previously thought.

What agricultural ecosystems on steroids are doing to the air

November 21, 2014 9:21 am | by Nicole Casal Moore, Univ. of Michigan | News | Comments

In a study that identifies a new, "direct fingerprint" of human activity on Earth, scientists have found that agricultural crops play a big role in seasonal swings of carbon dioxide in the atmosphere. The new findings from Boston Univ., the Univ. of Michigan and other institutions reveal a nuance in the carbon cycle that could help scientists understand and predict how Earth's vegetation will react as the globe warms.

New technology may speed up, build awareness of landslide risks

November 20, 2014 9:18 am | by David Stauth, Oregon State Univ. | News | Comments

Engineers have created a new way to use lidar technology to identify and classify landslides on a landscape scale, which may revolutionize the understanding of landslides in the U.S. and reveal them to be far more common and hazardous than often understood. The new, non-subjective technology can analyze and classify the landslide risk in an area of 50 or more square miles in about 30 mins.

World not close to avoiding dangerous warming

November 19, 2014 11:00 am | by Seth Borenstein - AP Science Writer - Associated Press | News | Comments

The world still isn't close to preventing what leaders call a dangerous level of man-made warming, a new United Nations report says. That's despite some nations' recent pledges to cut back on carbon dioxide emissions. The report looks at the gap between what countries promise to do about carbon pollution and what scientists say needs to be done to prevent temperatures rising another two degrees.

Research quantifies health benefits of reducing greenhouse gas emissions

November 19, 2014 8:31 am | by Allan Chen, Lawrence Berkeley National Laboratory | News | Comments

Reducing greenhouse gas (GHG) emissions, which result from the burning of fossil fuels, also reduces the incidence of health problems from particulate matter (PM) in these emissions. A team of scientists has calculated that the economic benefit of reduced health impacts from GHG reduction strategies in the U.S. range between $6 and $14 billion annually in 2020, depending on how the reductions are accomplished.

A new portrait of carbon dioxide

November 18, 2014 9:36 am | by Patrick Lynch, NASA's Goddard Space Flight Center | Videos | Comments

An ultra-high-resolution NASA computer model has given scientists a stunning new look at how carbon dioxide in the atmosphere travels around the globe. Plumes of carbon dioxide in the simulation swirl and shift as winds disperse the greenhouse gas away from its sources. The simulation also illustrates differences in carbon dioxide levels in the northern and southern hemispheres.

As temperatures rise, soil will relinquish less carbon to atmosphere

November 18, 2014 8:26 am | by Dan Krotz, Lawrence Berkeley National Laboratory | News | Comments

Here’s another reason to pay close attention to microbes: Current climate models probably overestimate the amount of carbon that will be released from soil into the atmosphere as global temperatures rise, according to research from Lawrence Berkeley National Laboratory. The findings are from a new computer model that explores the feedbacks between soil carbon and climate change.

Study: Polar bears disappearing from key region

November 17, 2014 5:01 pm | by Seth Borenstein - AP Science Writer - Associated Press | News | Comments

A key polar bear population fell nearly by half in the past decade, a new U.S.-Canada study found, with scientists seeing a dramatic increase in young cubs starving and dying. Researchers chiefly blame shrinking sea ice from global warming. Scientists from the U.S. Geological Survey and Environment Canada captured, tagged and released polar bears in the southern Beaufort Sea from 2001 to 2010.

Plants have little wiggle room to survive drought

November 14, 2014 10:27 am | by Stuart Wolpert, Univ. of California, Los Angeles | News | Comments

Plants all over the world are more sensitive to drought than many experts realized, according to a new study by scientists at the Univ. of California, Los Angeles and China’s Xishuangbanna Tropical Botanical Garden. The research will improve predictions of which plant species will survive the increasingly intense droughts associated with global climate change.

Porous molecules bind greenhouse gases

November 14, 2014 7:54 am | by Lisa Merkl, Univ. of Houston | News | Comments

A team of Univ. of Houston chemistry researchers have developed a molecule that assembles spontaneously into a lightweight structure with microscopic pores capable of binding large quantities of several potent greenhouse gases. While carbon dioxide presents the biggest problem, several other compounds are hundreds or thousands of times more potent in their greenhouse effect per unit of mass.

Lightning expected to increase by 50% with global warming

November 13, 2014 4:56 pm | by Robert Sanders, Univ. of California, Berkeley Media Relations | Videos | Comments

Today’s climate models predict a 50% increase in lightning strikes across the U.S. during this century as a result of warming temperatures associated with climate change. Reporting in Science, a team of climate scientists look at predictions of precipitation and cloud buoyancy in 11 different climate models and conclude that their combined effect will generate more frequent electrical discharges to the ground.

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