Less than five years after being removed from the endangered species list, peregrine falcons could be facing a new threat. A Swedish study found that eggs of peregrine falcons in that country contain high levels of a popular flame retardant, deca-BDE, which scientists have long thought could not get into wildlife. Falcons in North America are likely to face the same threat, the researchers say.
The birds eggs contained some of the highest levels of BDEs (brominated diphenyl ethers) ever found in any kind of wildlife, and this was the first time that the deca formulation of BDE has been found in a living organism. The findings add to mounting concern among some scientists that deca-BDE — the worlds most widely used brominated flame-retardant — is not as harmless as previously believed.
The report, which examined three peregrine falcon populations in Sweden — two in the wild and one in captivity — appears in the current edition (Jan. 1) of Environmental Science & Technology, a peer-reviewed journal of the American Chemical Society, the worlds largest scientific society.
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A new manufacturing technique uses a process similar to newspaper printing to form smoother and more flexible metals for making ultrafast electronic devices.
The low-cost process, developed by Purdue University researchers, combines tools already used in industry for manufacturing metals on a large scale, but uses...
For the first time ever, scientists have determined the cosmic origin of highest-energy neutrinos. A research group led by IceCube scientist Elisa Resconi, spokesperson of the Collaborative Research Center SFB1258 at the Technical University of Munich (TUM), provides an important piece of evidence that the particles detected by the IceCube neutrino telescope at the South Pole originate from a galaxy four billion light-years away from Earth.
To rule out other origins with certainty, the team led by neutrino physicist Elisa Resconi from the Technical University of Munich and multi-wavelength...
For the first time a team of researchers have discovered two different phases of magnetic skyrmions in a single material. Physicists of the Technical Universities of Munich and Dresden and the University of Cologne can now better study and understand the properties of these magnetic structures, which are important for both basic research and applications.
Whirlpools are an everyday experience in a bath tub: When the water is drained a circular vortex is formed. Typically, such whirls are rather stable. Similar...
Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.
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Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.
"Put an excitation into the system and observe how it evolves." According to physicist Professor Tobias Brixner, this is the credo of optical spectroscopy....
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