Environmental toxins enter the brain tissue of polar bears
PerFluoroAlkyl Substances (PFASs) and precursor compounds have been used in a wide variety of commercial and industrial products over the past six decades. Applications include water and oil repellent coatings, ...
Team uses carbon nanotubes for polarized-light detection
Using carpets of aligned carbon nanotubes, researchers from Rice University and Sandia National Laboratories have created a solid-state electronic device that is hardwired to detect polarized light across ...
Space traffic may be cause of increase in polar mesospheric clouds
A recent increase in polar mesospheric clouds could be due to a recent increase in space traffic, a new study suggests. Polar mesospheric clouds are diffuse collections of water ice crystals in the mesosphere near the poles ...
Researchers discover new retroviruses in polar bear 'Knut' and panda 'Bao Bao'
Endogenous retroviruses (ERVs) are viruses that at some point in the past inserted themselves into the nuclear genome of a host's germ cell. Once integrated in a germ cell the virus would be passed on from ...
Size matters for creatures of cold polar waters
Scientists at the Universities of Liverpool, Plymouth, and Radboud, Netherlands, have challenged the view that giant animals are found in polar seas because of a superabundance of oxygen in cold water.
Researchers develop light transistor
TU Vienna has managed to turn the oscillation direction of beams of light – simply by applying an electrical current to a special material. This way, a transistor can be built that functions with light ...
Star Tau Boo's baffling magnetic flips
(Phys.org) —The first observations of the complete magnetic cycle of a star other than the Sun are proving a puzzle to astronomers. Tau Boötis, known as Tau Boo (τ Boo), is a yellowish star that is a ...
Study targets biodiversity conservation under-funders
If you take into consideration how much a country is expected to spend on conserving biodiversity, based on its size, wealth and share of biodiversity, a new study uncovers some surprising delinquents.
CryoSat maps largest-ever flood beneath Antarctica
(Phys.org) —ESA's CryoSat satellite has found a vast crater in Antarctica's icy surface. Scientists believe the crater was left behind when a lake lying under about 3 km of ice suddenly drained.
The breathing ocean: Reducing the effects of climate change
(Phys.org) —Each year, between the burning of fossil fuels and the clearing of old growth forests, humans put about 10 petagrams of carbon dioxide (CO2) into the atmosphere. A petagram is one quadrillion ...
Scientists use DNA from a museum specimen to study rarely observed type of killer whale
In a scientific paper published in the journal Polar Biology, researchers report using DNA from tissues samples collected in 1955 to study what may be a new type of killer whale (Orcinus orca).
Warm ocean drives most Antarctic ice shelf loss, research shows
Ocean waters melting the undersides of Antarctic ice shelves, not icebergs calving into the sea, are responsible for most of the continent's ice loss, a study by UC Irvine and others has found.
Material scientists build ferroelectric memory device based on light response
Study suggests second life for possible spintronic materials
Ten years ago, scientists were convinced that a combination of manganese and gallium nitride could be a key material to create spintronics, the next generation of electronic devices that operate on properties ...