A group of researchers in Australia and Taiwan has developed a new way to analyze the health of human teeth using lasers. As described in the latest issue of Optics Express,, by measuring how the surface of a tooth responds ...
Optics & Photonics
Aug 18, 2009
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The smallest organisms to use a biological compass are magnetotactic bacteria, however mysteries remain about exactly how these bacteria create their cellular magnets. In a study published online in Genome Research, scientists ...
Biotechnology
Aug 11, 2009
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The twirling seeds of maple trees spin like miniature helicopters as they fall to the ground. Because the seeds descend slowly as they swirl, they can be carried aloft by the wind and dispersed over great distances. Just ...
Biotechnology
Jun 11, 2009
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(PhysOrg.com) -- A new NASA study provides further evidence that Martian minerals dissolved in water could have kept that water from freezing, even on a cold, early Mars.
Space Exploration
Jun 1, 2009
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(PhysOrg.com) -- While proving a long-held theory that suberin blocks water and nutrient absorption in plants, a Purdue University scientist learned more about manipulating the substance to better feed plants.
Biotechnology
May 22, 2009
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In an analysis1 of commercially available mineral waters, the researchers found evidence of estrogenic compounds leaching out of the plastic packaging into the water. What's more, these chemicals are potent in vivo and result ...
Environment
Mar 26, 2009
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(PhysOrg.com) -- Until recently, researchers studying climate history in Brazil’s dry Nordeste region expected it to have wet and dry periods similar to the rest of South America. But over the past 9,000 years, the region ...
Earth Sciences
Feb 25, 2009
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(PhysOrg.com) -- Astronauts spending months in space lose significant bone strength, making them increasingly at risk for fractures later in life.
Space Exploration
Jan 26, 2009
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Nickel (Ni) and cobalt (Co) are critical elements for modern technologies, with high-grade Ni and Co ores becoming increasingly scarce. Mafic and ultramafic deposits are low-grade, abundant alternatives to traditional Ni ...
Analytical Chemistry
Aug 26, 2024
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Imagine plants not just sipping nutrients dissolved in water, but actually munching on tiny mineral particles straight from the soil. A study sheds light on how wheat and lettuce aren't just passive feeders—they actively ...
Agriculture
Aug 22, 2024
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