NASA using space radar to track groundwater pollution risks
March 20, 2015 05:25 AM - Roger Greenway, ENN
Water is our most precious natural resource. Without clean water to drink human populations cannot exist. But our water supplies are under constant assault from anthropogenic pollution.
When pollutants get into groundwater, they can stay there for decades. Cleanup efforts are difficult, expensive and not always successful. It would be better to protect groundwater from contamination in the first place, but risks to groundwater are moving targets. Although unchanging factors such as porous soil or shallow aquifer depth play a role, the greatest risk comes from the source of the pollutants: people. And people are always moving. A growing city, in particular, usually means a growing threat to groundwater quality. To lock on to the moving target of groundwater risk, planners worldwide need up-to-date information on how people are changing the land surface.
Electric Vehicles are Cool, Literally.
March 19, 2015 02:02 PM - Michigan State University
A study in this week’s Scientific Report by researchers at Michigan State University (MSU) and in China add more fuel to the already hot debate about whether electric vehicles are more environmentally friendly than conventional vehicles by uncovering two hidden benefits.
They show that the cool factor is real – in that electric vehicles emit significantly less heat. That difference could mitigate the urban heat island effect, the phenomenon that helps turn big cities like Beijing into pressure cookers in warm months.
New data show iron rain fell on early Earth
March 18, 2015 08:52 AM - Sandia National Laboratories
Researchers at Sandia National Laboratories’ Z machine have helped untangle a long-standing mystery of astrophysics: why iron is found spattered throughout Earth’s mantle, the roughly 2,000-mile thick region between Earth’s core and its crust.
Princeton University geologists mapping the Earth's mantle in 3D
March 12, 2015 02:04 PM - Catherine Zandonella, Office of the Dean for Research, Princeton University
When a 7.9-magnitude earthquake struck central China's Sichuan province in 2008, seismic waves rippled through the region, toppling apartment houses in the city of Chengdu and swaying office buildings 1,000 miles away in Shanghai.
Though destructive, earthquakes provide benefit in one respect: they help researchers learn about the structure of the Earth, which in turn could lead to more accurate predictions of damage from future quakes and volcanic activity. By eavesdropping on the seismic vibrations of quakes as they rumble through the Earth, researchers can detect the existence of structures such as mineral deposits, subterranean lakes, and upwellings of magma. Thanks to a growing earthquake detection network and superfast computers, geoscientists are now able to explore the Earth's interior, a region that has been more inaccessible than the deepest ocean or the farthest planet in our solar system.
Bristol University sheds new light on early terrestrial vertebrate
March 12, 2015 06:54 AM - University of Bristol
The first 3D reconstruction of the skull of a 360 million-year-old near-ancestor of land vertebrates has been created by scientists from the Universities of Bristol and Cambridge.
The 3D skull, which differs from earlier 2D reconstructions, suggests such creatures, which lived their lives primarily in shallow water environments, were more like modern crocodiles than previously thought.
Saturn's moon Enceladus is spewing tiny silica grains, new study finds
March 11, 2015 04:28 PM - Universtiy of Colorado
A new study by a team of Cassini mission scientists led by the University of Colorado Boulder have found that microscopic grains of rock detected near Saturn imply hydrothermal activity is taking place within the moon Enceladus.
The grains are the first clear indication of an icy moon having hydrothermal activity, in which seawater infiltrates and reacts with a rocky crust, emerging as a heated, mineral-laden solution. The finding adds to the tantalizing possibility that Enceladus, one of at least 60 Saturn moons or moonlets and which displays remarkable geologic activity including geysers, could contain environments suitable for living organisms.
Solar Impulse going around the world on sunshine
March 10, 2015 07:48 AM - RP Siegel, Triple Pundit
After 13 years of planning, the Solar Impulse SI2 took off last night from Al-Bateen Executive Airport in Abu Dhabi at 7:12 a.m. local time. This initiated the first leg of its historic attempt to be the first solar-powered airplane to fly around the world. If all goes well, the plane will return to Al-Bateen in June or July. As reported here in January, the first leg was a short 12-hour “shakedown cruise” to Muscat, Oman, piloted by Andre Borschberg. The plane landed safely in Muscat, more or less on schedule, at 12:14 p.m. Eastern time.
Of the two pilots who will take turns behind the wheel, Borschberg is the engineer and former fighter pilot who is intimately familiar with every detail of the plane’s design and construction.
New insight on the Tree of Life from Temple University
March 4, 2015 07:47 AM - Temple University via EurekAlert
Temple University researchers have assembled the largest and most accurate tree of life calibrated to time, and surprisingly, it reveals that life has been expanding at a constant rate.
"The constant rate of diversification that we have found indicates that the ecological niches of life are not being filled up and saturated," said Temple professor S. Blair Hedges, a member of the research team's study, published in the early online edition of the journal Molecular Biology and Evolution. "This is contrary to the popular alternative model which predicts a slowing down of diversification as niches fill up with species."
The tree of life compiled by the Temple team is depicted in a new way --- a cosmologically-inspired galaxy of life view --- and contains more than 50,000 species in a tapestry spiraling out from the origin of life.
Using satellites to monitor forest health
February 28, 2015 07:12 AM - Oregon State University
Scientists for the first time have simultaneously compared widespread impacts from two of the most common forest insects in the West – mountain pine beetle and western spruce budworm – an advance that could lead to more effective management policies.
By combining data from satellites, airplanes and ground-based crews, the researchers have shown in unprecedented detail how insects affect Western forests over decades.
In the past, forest managers relied on airplane surveys to evaluate insect damage over broad areas.
Antifreeze protein from ticks fights frostbite in mice
February 26, 2015 08:54 AM - Ziba Kashef, Yale University
A protein that protects ticks from freezing temperatures also prevents frostbite when introduced in mice, a Yale-led study has found. The research is the first to demonstrate the protein’s ability to boost frostbite resistance in an adult mammal.