New theory on African exit
Modern humans left Africa twice as early as previously thought, spreading in a number of climate-driven waves, new research suggests.
Archaeology
Jan 30, 2013
10
0
30/01/2013
Colorado fire pollution rivaled worst days in Mexico City, Los Angeles, new study says
(Phys.org)—Particulate matter from the summer's devastating High Park Fire exceeded some of the worst air pollution days in Mexico City or Los Angeles over the past decade, say Colorado State University researchers, who ...
Environment
Jan 30, 2013
1
0
Aging cells lose their grip on DNA rogues
(Phys.org)—Transposable elements are mobile strands of DNA that insert themselves into chromosomes with mostly harmful consequences. Cells try to keep them locked down, but in a new study, Brown University researchers ...
Cell & Microbiology
Jan 30, 2013
0
2
Ability to miniaturize photonics devices to sizes compatible with computer chips inches closer
Optical communications, or photonics, technology has failed to match the miniaturization of electronic components, mainly because of fundamental laws of classical optics. The smallest photonic devices are limited to sizes ...
Optics & Photonics
Jan 30, 2013
0
0
Why some immigrants get citizenship: Country of origin 'massive disadvantage' for some immigrants, study finds
For immigrants, the path to citizenship in many countries is filled with hurdles: finding a job, learning the language, passing exams. But for some people, the biggest obstacle of all may be one they cannot help: their country ...
Social Sciences
Jan 30, 2013
2
0
ID great teaching through classroom observations, student surveys and achievement gains, researchers say
There are approximately 3.9 million teachers in the United States. These teachers interact with tens of millions of students a year, and yet there is not a widely accepted standard to evaluate their daily work of educating ...
Social Sciences
Jan 30, 2013
0
0
Generating, sustaining electrical currents with unique properties for information processing closer to reality
Spintronics is a form of signal processing similar to that used in traditional electronics, but it takes advantage of a property of electrons known as spin. Spin is often visualized as an arrow about which the electron rotates, ...
General Physics
Jan 30, 2013
0
0
Many heterosexual college males say 'That's so gay,' but why?
(Phys.org)—"That's so gay" is a popular expression on campuses nationwide among heterosexual students, especially young men. But why do they say it? A new University of Michigan study sheds light on this question.
Social Sciences
Jan 30, 2013
36
0
NSAC to recommend closing BNL Relativistic Heavy Ion Collider facility
(Phys.org)—A panel of experts on the Nuclear Science Advisory Committee (NSAC) has decided to recommend closing the Relativistic Heavy Ion Collider (RHIC) in New York. The move comes after budget cuts for physics research ...
Internet age navigation drives economies
Fresh from unveiling detailed online maps of North Korea, Google on Wednesday touted studies showing that Internet Age navigation tools boost the economic engines of nations.
Business
Jan 30, 2013
0
0
