News tagged with calcium deposits
Seeing the forest under the trees
(PhysOrg.com) -- Scientists recently discovered nitrogen that falls from the atmosphere in acid rain can influence large tracts of sugar maples in North America.
Dec 08, 2011 |
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Research shows that soil calcium limits forest songbirds
Acid rain and subsequent calcium depletion of forest soils in eastern North America may be limiting forest songbird populations, according to a researcher in Penn State's College of Agricultural Sciences.
Sep 07, 2011 |
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Surgical gel used to stop bleeding could confuse mammograms
Dr. Kathleen Ward noticed something odd when she examined the mammogram of a patient who had recently undergone breast cancer surgery.
Apr 14, 2009 |
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A crystal clear view of chalk formation
(PhysOrg.com) -- It has a beautiful, but also an unpleasant side: crystallization determines the shape of precious stones, but also causes the lime scale in washing machines. How this comes about, has been ...
Jan 23, 2009 |
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