For years, many scientists had thought that plate tectonics existed nowhere in our solar system but on Earth. Now, a UCLA scientist has discovered that the geological phenomenon, which involves the movement of huge crustal plates beneath a planet’s surface, also exists on Mars.
“Mars is at a primitive stage of plate tectonics. It gives us a glimpse of how the early Earth may have looked and may help us understand how plate tectonics began on Earth,” said An Yin, a UCLA professor of Earth and space sciences and the sole author of the new research. (more…)
Berkeley Lab scientists develop new method for evaluating short-lived pollutants.
New research from Lawrence Berkeley National Laboratory (Berkeley Lab) has found that levels of methane—a potent greenhouse gas emitted from many man-made sources, such as coal mines, landfills and livestock ranches—are at least one-and-a-half times higher in California than previously estimated.
Working with scientists from the National Oceanic and Atmospheric Administration (NOAA) Berkeley Lab scientists Marc L. Fischer and Seongeun Jeong combined highly accurate methane measurements from a tower with model predictions of expected methane signals to revise estimated methane emissions from central California. They found that annually averaged methane emissions in California were 1.5 to 1.8 times greater than previous estimates, depending on the spatial distribution of the methane emissions. (more…)
Thanks to the generosity of three professional meteorite hunters, the UA Lunar and Planetary Laboratory will own three samples of a rare kind of meteorite leftover from the earliest beginnings of the solar system.
To the untrained eye, the black, smooth-edged lump that is sitting under a glass cover looks similar to a piece of charcoal. But to scientists Dante Lauretta and Ed Beshore from the University of Arizona Lunar and Planetary Laboratory, it is one of the most intriguing stones they have ever seen.
“This meteorite is the oldest rock you’ll ever find on Earth. In fact, it formed 50 to 60 million years before the Earth even existed,” said Lauretta, who is a professor of planetary science and principal investigator of NASA’s OSIRIS-REx mission, which will send a spacecraft to return a sample from an asteroid in 2023. (more…)
Team members of NASA’s Mars Science Laboratory mission took a test rover to Dumont Dunes in California’s Mojave Desert this week to improve knowledge of the best way to operate a similar rover, Curiosity, currently flying to Mars for an August landing.
The test rover that they put through paces on various sandy slopes has a full-scale version of Curiosity’s mobility system, but it is otherwise stripped down so that it weighs about the same on Earth as Curiosity will weigh in the lesser gravity of Mars. (more…)
ANN ARBOR, Mich.— Loss of biodiversity appears to impact ecosystems as much as climate change, pollution and other major forms of environmental stress, according to a new study from an international research team.
The study is the first comprehensive effort to directly compare the impacts of biological diversity loss to the anticipated effects of a host of other human-caused environmental changes.
The results highlight the need for stronger local, national and international efforts to protect biodiversity and the benefits it provides, according to the researchers, who are based at nine institutions in the United States, Canada and Sweden. (more…)
Long-forgotten coastal habitats reappeared, species unseen for years returned
The reappearance of long-forgotten habitats and the resurgence of species unseen for years may not be among the expected effects of a natural disaster.
Yet that’s exactly what researchers found in a study of the sandy beaches of south central Chile, after an 8.8-magnitude earthquake and devastating tsunami in 2010.
Their study also revealed a preview of the problems wrought by sea level rise–a major symptom of climate change. (more…)
MU researchers recommend legislative action to help local economy, state revenue
COLUMBIA, Mo. – Internet, or e-commerce, sales have increased over the past two decades, comprising nearly 17 percent of the total U.S. sales in 2009. However, many states, including Missouri, have no effective means of collecting taxes on those sales. Researchers at the University of Missouri Truman School of Public Affairs found that the state lost approximately $468 million annually in sales tax revenue during the past decade.
Federal law and U.S. Supreme Court rulings only allow states to levy sales taxes on a business with a physical presence in the state. For example, Amazon.com does not charge sales tax in Missouri because it is physically located in California. However, Wal-Mart charges sales tax, since it has stores in Missouri. In the study, researchers analyzed historical data on e-commerce activity and estimated that the state will miss out on $1.4 billion in potential revenue from 2011 to 2014. (more…)
10″ Tablets Have 39 Percent Higher Content Consumption Rate than 7″ Tablets
comScore Device Essentials™ Introduces Unique Device and Local Market Reporting to Cross-Device Digital Traffic Measurement
RESTON, VA, April 26, 2012 – comScore, Inc., a leader in measuring the digital world, today announced the next generation of its Device Essentials™ service, offering new insight into global digital device usage. Based on comScore’s global Unified Digital Measurement (UDM) data, which utilizes census-level information from tagged web page content, Device Essentials includes reporting of brand and operating system for digital device and Internet traffic patterns (i.e. page views) from computers, smartphones, tablets, music, players, e-readers and gaming devices.
“comScore is excited to introduce our next generation Device Essentials product, which provides new insight into digital device usage and detailed reporting of traffic patterns within local markets,” said Serge Matta, comScore president of mobile & operator solutions. “These new insights are invaluable to all stakeholders in the mobile ecosystem as they seek to provide valuable services and optimize the mobile media experience for their customers.” (more…)
