Phase synchronization is a phenomenon in which separate oscillatory systems develop joint coherent behavior by some nonlinear mechanism. First described in 1673 by Dutch scientist Christiaan Huygens, this phenomenon occurs for instance when an applauding audience suddenly starts to clap in unison or when human breathing patterns lock to multiples of the heart beat.
For decades, scientists have believed that a relationship exists between how much biomass plant species produce and how many species can coexist. Stanley Harpole, assistant professor in the Department of Ecology, Evolution, and Organismal Biology at Iowa State University, was part of the team researching productivity and richness, and he says the research doesn’t support that relationship.
Changes in the ratio of nitrate to phosphorus in the oceans off the coasts of Korea and Japan caused by atmospheric and riverine pollutants may influence the makeup of marine plants and influence marine ecology, according to researchers from Korea and the U. S.
Relatively accurate predictions for the extent of Arctic sea ice in a given summer can be made by assessing conditions the previous autumn, but conditions more than five years into the future depend on understanding the impact of climate trends on the ice pack, new research shows.
Because costs of trash collection have increased significantly while landfill space diminishes, radio frequency identification (RFID) holds the potential to dramatically reduce the volume of trash and increase the amount of materials being recycled.
Scientists at Kansas State University and seven other collaborating institutions were recently awarded $3.3 million from the National Science Foundation to conduct a-large scale study of how stream organisms influence water quality across North America.
Geography professor Bruce Rhoads and geology professor Jim Best were conducting research where the Wabash River meets the Ohio River in the summer of 2008 when they heard about a new channel that had just formed, cutting off a bend in the winding Wabash just upstream from the confluence. That serendipity gave the researchers a rare view of a dynamic, little-understood river process that changed the local landscape and deposited so much sediment into the river system that it closed the Ohio River.
Global emissions of carbon dioxide (CO2) increased by 45 percent between 1990 and 2010, and reached an all-time high of 33 billion tons in 2010. Increased energy-efficiency, nuclear energy and the growing contributions of renewable energy are not compensating for the globally increasing demand for power and transport, which is strongest in developing countries.
On September 11, 2001, as the twin towers of the World Trade Center exploded and collapsed, clouds of dust billowed into the sky and across the city. Photographs from the outskirts show the thick clouds swallowing much of lower Manhattan. Satellite images reveal that the clouds were large enough to be seen from space. Survivors overtaken by the clouds emerged covered in a thick layer of dirt and debris. They reported that the clouds were so dense that they blacked out the sun.
Twelve people were charged yesterday with illegally distributing and selling unregistered and misbranded pesticides from multiple locations in Manhattan. Prosecutors charged two of the 12, Chen Yah Huang and Jai Ping Chen, with federal crimes, and the remaining ten were charged under state statutes
The black smoke that rose from the water’s surface during the controlled burns pumped more than 1 million pounds of black carbon (soot) pollution into the atmosphere, according to a new study published last week by researchers at NOAA and its Cooperative Institute for Research in Environmental Sciences (CIRES) in Boulder, Colo.
The federal and state natural resource trustees estimate that the spill killed 6,849 birds, affected 14 to 29 percent of the herring spawn that winter, oiled 3,367 acres of shoreline habitat and resulted in the loss of more than one million recreational user-days. A result of a multi-governmental effort by federal and state agencies, and municipal governments, the settlement is expected to fully compensate (in addition to previously reimbursed costs) for the natural resources and other damages and costs resulting from the spill.
The report identifies best practices and makes recommendations to help save more lives during future violent tornadoes. Most importantly, the assessment emphasizes that people must be prepared to take immediate action when a warning is issued.
Modifying soybean seed to increase phosphorus content can improve animal nutrition and reduce feed costs and nutrient pollution. However, further research is needed to commercialize this valuable technology.
DOE announces 16 projects supporting activities in 24 states and the District of Columbia to accelerate the adoption of electric vehicles in communities across the nation, and seven additional projects in seven states to help prepare college students for careers designing and building advanced vehicle technologies.
Worldwide energy consumption is projected to grow by 53 percent between 2008 and 2035, with much of the increase driven by strong economic growth in the developing nations especially China and India, according the Energy Information Administration’s International Energy Outlook 2011.
The bill would give algae-based biofuels tax parity while leveling the playing field for all advanced biofuels by expanding the Clean Air Act’s definition of an advanced biofuel.
A chemical manufacturing and distribution facility in South Portland, Maine, faces an EPA fine of up to $151,900 for improper storage of hazardous materials, in violation of federal and state laws.
EPA Region 10 issued final air quality permits to Shell on Sept. 19 for oil and gas exploration drilling in the Alaska Arctic. The permits will allow Shell to operate the Discoverer drillship and a support fleet of icebreakers, oil spill response vessels, and supply ships for up to 120 days each year in the Chukchi Sea and Beaufort Sea Outer Continental Shelf starting in 2012.
Deforestation in the rainforests of West Africa reduces rainfall over the rest of the forest, according to new University of Leeds research published in Geophysical Research Letters. The study shows that changing land use from forest to crop land reduces rainfall over neighboring trees by about 50 percent due to changes in the surface temperature, which affects the formation of rain clouds.