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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The building blocks of matter in our universe were formed in the first 10 microseconds of its existence, according to the currently accepted scientific picture. After the Big Bang about 13.7 billion years ago, matter consisted mainly of quarks and gluons, two types of elementary particles whose interactions are governed by quantum chromodynamics (QCD), the theory of strong interaction. In the early universe, these particles moved (nearly) freely in a quark-gluon plasma.
This is a joint press release of University Muenster and Heidelberg as well as the GSI Helmholtzzentrum für Schwerionenforschung in Darmstadt.
Then, in a phase transition, they combined and formed hadrons, among them the building blocks of atomic nuclei, protons and neutrons. In the current issue of...
Thin-film solar cells made of crystalline silicon are inexpensive and achieve efficiencies of a good 14 percent. However, they could do even better if their shiny surfaces reflected less light. A team led by Prof. Christiane Becker from the Helmholtz-Zentrum Berlin (HZB) has now patented a sophisticated new solution to this problem.
"It is not enough simply to bring more light into the cell," says Christiane Becker. Such surface structures can even ultimately reduce the efficiency by...
A study in the journal Bulletin of Marine Science describes a new, blood-red species of octocoral found in Panama. The species in the genus Thesea was discovered in the threatened low-light reef environment on Hannibal Bank, 60 kilometers off mainland Pacific Panama, by researchers at the Smithsonian Tropical Research Institute in Panama (STRI) and the Centro de Investigación en Ciencias del Mar y Limnología (CIMAR) at the University of Costa Rica.
Scientists established the new species, Thesea dalioi, by comparing its physical traits, such as branch thickness and the bright red colony color, with the...
Scientists have succeeded in observing the first long-distance transfer of information in a magnetic group of materials known as antiferromagnets.
An international team of researchers has mapped Nemo's genome, providing the research community with an invaluable resource to decode the response of fish to...
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