Engineering researchers have invented a novel electrical power converter system that simultaneously accepts power from a variety of energy sources and converts it for use in the electrical grid system. Innovations in this field are critical as the U.S. moves toward integration of renewable energy sources to the national power grid.
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.
If you've studied ingredient labels on food packaging, you've probably noticed that soy lecithin is in a lot of products, ranging from buttery spreads to chocolate cake. Scientists have now found a potential new role for this all-purpose substance: dispersing crude oil spills. Their study, which could lead to a less toxic way to clean up these environmental messes, appears in ACS Sustainable Chemistry & Engineering.
With real-time monitors, scientists have linked a swarm of small earthquakes west of Fort Worth, Texas, to nearby natural gas wells and wastewater injection. In 84 days from November 2013 to January 2014, the area around Azle, Texas, shook with 27 magnitude 2 or greater earthquakes, while scientists at Southern Methodist Univ. and the U.S. Geological Survey monitored the shaking.
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.
3D printing has been used to make everything from cars to medical implants. Now, Univ. of Washington ecologists are using the technology to make artificial flowers, which they say could revolutionize our understanding of plant-pollinator interactions.
From above, five years after the BP well explosion, the Gulf of Mexico looks clean, green and whole again, teeming with life: a testament to the resilience of nature. But there's more than surface shimmering blue and emerald to the aftermath of the Deepwater Horizon spill. And it's not as pretty a picture, nor is it as clear.
China has become the world’s largest exporter, leading to the country’s rapid economic development, and notorious pollution that’s harmful to human health. For the first time, scientists have estimated this trend’s health cost. They report in Environmental Science & Technology that in 2007, export-related emissions in China led to almost 160,000 deaths.
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.
Scientists at The Univ. of Manchester have discovered a way to make trees grow bigger and faster, which could increase supplies of renewable resources and help trees cope with the effects of climate change. In the study, published in Current Biology, the team successfully manipulated two genes in poplar trees in order to make them grow larger and more quickly than usual.
The researchers have filed for a patent on the technology and hope to license it for commercial development.
A team has shown that south east Iceland is underlain by continental crust. The team found that the accepted theory, that Iceland consists only of very thick oceanic crust, is incorrect. Maps of crustal thickness produced from satellite gravity data, together with geochemical, plate tectonic reconstruction and mantle plume track analysis, were used to show south east Iceland is underlain by continental crust.
Frozen Arctic and sub-Arctic soil that thaws from global warming will add substantial amounts of carbon to the atmosphere in the form of greenhouse gases, accelerating climate change the rest of the century, but it won't come in a sudden burst, researchers say in a new paper.
Carbon capture will play a central role in helping the nations of the world manage and reduce their greenhouse gas emissions. Many materials are being tested for the purpose of capturing carbon dioxide. But now researchers led by the Norwegian Univ. of Science and Technology have found that ordinary clay can work just as effectively as more advanced materials.
The discovery of antibiotics produced by soil fungi and bacteria gave the world life-saving medicine. But new antimicrobials from this resource have become scarce as the threat of drug resistance grows. Now, scientists have started mining lakes and rivers for potential pathogen-fighters, and they’ve found one from Lake Michigan that is effective against drug-resistant tuberculosis.
Scientists are working to pinpoint the source of a giant mass of methane hanging over the southwestern U.S., which a study found to be the country's largest concentration of the greenhouse gas. The report that revealed the methane hot spot over the Four Corners region, where Colorado, New Mexico, Utah and Arizona meet, was released last year.
Now that most consumers download and stream their movies and music, more and more CDs and DVDs will end up in landfills or be recycled. But soon these discarded discs could take on a different role: curbing the release of greenhouse gases. In ACS Sustainable Chemistry & Engineering, scientists report a way to turn the discs into a material that can capture carbon dioxide, a key greenhouse gas, and other compounds
Can old data provide new insights about lightning and the physics of severe weather? A scientist at The Univ. of Alabama in Huntsville (UAH) thinks it can. Supported by a grant from the National Oceanic and Atmospheric Administration, UAH's Dr. Philip Bitzer will spend the next two years studying 17 years of data from NASA's Lightning Imaging Sensor, and breaking lightning flashes into their smallest pieces.
A first-of-its-kind robotic vehicle recently dove to depths never before visited under Antarctica’s Ross Ice Shelf and brought back video of life on the seafloor. A team of scientists and engineers from the Georgia Institute of Technology assembled the unmanned, underwater vehicle on Antarctica. They deployed (and retrieved) the vehicle through a 12-in diameter hole through 20 m of ice and another 500 m of water to the sea floor.
Clearing grasslands to make way for biofuels may seem counterproductive, but Univ. of Wisconsin-Madison researchers show in a study that crops, including the corn and soy commonly used for biofuels, expanded onto 7 million acres of new land in the U.S. over a recent four-year period, replacing millions of acres of grasslands.
Approximately 10% of ozone pollution in California’s San Joaquin Valley is estimated to be coming from outside of the state’s borders, particularly from Asia, according to preliminary research presented by the Univ. of California, Davis. Secondhand smog from Asia and other international sources is finding its way into one of the nation’s most polluted air basins, the San Joaquin Valley.
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 from ETH Zurich have developed a thermometer that is at least 100 times more sensitive than previous temperature sensors. It consists of a bio-synthetic hybrid material of tobacco cells and nanotubes. Humans have been inspired by nature since the beginning of time. We mimic nature to develop new technologies, with examples ranging from machinery to pharmaceuticals to new materials.