• Panetta: Environment is becoming a national security concern

    Climate and environmental change are emerging as national security threats that weigh heavily in the Pentagon’s new strategy; the secretary also said he has great concern about energy-related threats to homeland security that are not driven by climate change

  • Bomb-sniffing dogs used in Everglades python invasion

    Burmese pythons have invaded the Florida Everglades, adapting well to the Everglades environment; they have also been wreaking havoc with the delicate ecosystem of the area; now, there is a new weapon in the fight against the Burmese python: dogs, trained to sniff out explosives, are being re-trained to locate the Burmese python

  • Australians told sweeping economic, societal changes needed to cope with severe weather

    The Australian government’s Productivity Commission has just released its much-anticipated report, titled Barriers to Effective Climate Change Adaptation; the report calls for sweeping changes across the Australian economy, including ditching property taxes which discourage people from moving out of areas prone to extreme weather events

  • Identifying the sources of global sea level rise

    As the Earth’s climate warms, a melting ice sheet produces a distinct and highly non-uniform pattern of sea-level change, with sea level falling close to the melting ice sheet and rising progressively farther away. The pattern for each ice sheet is unique and is known as its sea level fingerprint; now, geophysicists have found a way to identify the sea level fingerprint left by a particular ice sheet

  • New monitoring system clarifies atmospheric CO2 questions

    Most climate scientists believe higher concentrations of the greenhouse gas CO2 in Earth’s atmosphere are leading to rising temperatures on the planet; trouble is, CO2 is derived not only from fossil fuels, but is also being emitted by biological sources like plant respiration; CO2 released from fossil fuels has no carbon-14, while CO2 emitted from biological sources on Earth is relatively rich in carbon-14, allowing scientists to compare emissions from man-made fossil fuels to biologically emitted CO2

  • Border security bill would harm U.S. National Parks: environmentalists

    A bill pending in the U.S. House of Representatives would suspend the enforcement of almost all the U.S. environmental laws on all lands under the jurisdiction of the Departments of the Interior and Agriculture within 100 miles of the northern border with Canada and the southern border with Mexico; the 100-mile zone includes fifteen National Parks which cover 21,657,399 acres, or nearly 25 percent of the overall footprint U.S. National Park System; supporters of the bill claim it would bolster border security, while environmentalists say it would gut a century’s worth of proven federal lands protection

  • Scientists: Deepwater Horizon exposed gaps in deepwater oil spill knowledge

    On the second anniversary of the Deepwater Horizon oil spill in the Gulf of Mexico, a national team of scientists warns that inadequate knowledge about the effects of deepwater oil well blowouts threatens scientists’ ability to help manage comparable future events

  • Solar storms and infrastructure vulnerabilities

    Space weather, and in particular coronal mass ejections, can cause huge disruption to many highly technological systems on Earth; experts say that vulnerable industries, such as power grids and airlines, should gather more information on space weather in order to make more informed decisions about how to deal with future solar storms

  • Himalayan glaciers decline less rapidly than previously feared

    Several hundreds of millions of people in Southeast Asia depend, to varying degrees, on the freshwater reservoirs of the Himalayan glaciers; it is thus important to detect the potential impact of climate changes on the Himalayan glaciers at an early stage; together with international researchers, glaciologists from the University of Zurich now show that the glaciers in the Himalayas are declining less rapidly than was previously thought; the scientists, however, see major hazard potential from outbursts of glacial lakes

  • Autonomous, self-replicating robots for finding extraterrestrials

    Autonomous, self-replicating robots — exobots — are the way to explore the universe, find and identify extraterrestrial life, and perhaps clean up space debris in the process; scientists note that if aliens are out there, they have the same problems we do: they need to conserve resources, are limited by the laws of physics, and they may not even be eager to meet us

  • Water vulnerability in U.S. border region

    The Arizona-Sonora region has been called the front line of ongoing climate change, with global climate models projecting severe precipitation decreases and temperature increases coupled with vulnerability from urbanization, industrialization and agricultural intensification

  • Robust nanosponges soak up oil again and again

    Researchers show that nanotube blocks hold promise for environmental cleanup following oil spills or other disasters; the robust sponge can be used repeatedly and stands up to abuse; a sample nanosponge remained elastic after about 10,000 compressions in the lab; the sponge can also store the oil for later retrieval

  • Ion stream to clean up Earth orbit, deflect asteroids

    One of the legacies of the space age is an ever-more-crowded near-Earth orbit, where all manner of long-abandoned human-made objects loiter, posing danger to newer space platforms; scientists want to develop a magnetized-beam plasma propulsion device which would be deployed in Earth orbit and which would  use a focused ion stream to push dead satellites and other debris toward Earth’s atmosphere, where they would mostly burn up on re-entry; the device could also be used to deflect menacing Earth-bound asteroids hurtling toward Earth

  • Diet change required to curb most potent greenhouse gas

    N2O is the third highest contributor to climate change behind carbon dioxide (CO2) and methane (CH4), but it poses a greater challenge to mitigate as nitrogen is an essential element for food production; it is also the most potent of these three greenhouse gases as it is a much better absorber of infrared radiation

  • In environmental disasters, families experience conflict, denial, silence

    Environmental disasters affect individuals and communities; they also affect how family members communicate with each other, sometimes in surprising ways; the researchers say that the findings were, in some ways, counterintuitive