During accretion and differentiation of the Earth, chemical interactions in a silicate magma ocean and liquid iron drove silicon and oxygen impurities into what went on to become the liquid outer core. Contrasting with previous ...
Earth Sciences
Jan 29, 2013
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(Phys.org)—NASA's Mars rover Curiosity has placed its drill onto a series of four locations on a Martian rock and pressed down on it with the rover's arm, in preparation for using the drill in coming days.
Space Exploration
Jan 29, 2013
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The sophisticated electronics used by warfighters in everything from radios, remote sensors and even phones can now be made at such a low cost that they are pervasive throughout the battlefield. These electronics have become ...
Engineering
Jan 29, 2013
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(Phys.org)—A team of chemists and biologists led by Indiana University chemistry professor David Giedroc has described a previously unknown function of a protein they now know is responsible for protecting a major bacterial ...
Biochemistry
Jan 29, 2013
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Most of us are aware of the potential health benefits of omega-3 found in fish oil and flax seed. Now researchers have found that omega-3 could help laying hens avoid bone damage, which affects millions of hens each year, ...
Other
Jan 29, 2013
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(Phys.org)—A group of leading conservation scientists from The University of Queensland (UQ) and James Cook University (JCU) has exposed the private life of a small, endangered kangaroo.
Plants & Animals
Jan 29, 2013
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(Phys.org)—Microbe-eating flies from at least three different locations around the world recently have evolved into herbivores, feeding on some of the most toxic plants on Earth. Fly detectives and UA evolutionary biologists ...
Evolution
Jan 29, 2013
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The Pentagon has lifted the military's official ban on women in combat, a historic decision that President Obama said reflected "the courageous and patriotic service of women through more than two centuries ...
Social Sciences
Jan 29, 2013
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(Phys.org)—Consumed by 3 billion people, rice is arguably the world's most important food staple, and one reason for its popularity is that rice can be grown under flooded conditions that suppress weeds, making cultivation ...
Biotechnology
Jan 29, 2013
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(Phys.org)—A new study by a team of chemists in Greece has added credence to a theory that suggests that humans differentiate smells by sensing molecular vibrations, rather than through simple binding to receptors. In their ...
