Calcium carbonate

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Calcium carbonate is a chemical compound with the chemical formula CaCO3. It is a common substance found in rock in all parts of the world, and is the main component of shells of marine organisms, snails, pearls, and eggshells. Calcium carbonate is the active ingredient in agricultural lime, and is usually the principal cause of hard water. It is commonly used medicinally as a calcium supplement or as an antacid, but high consumption can be hazardous.

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News tagged with calcium carbonate


Watching Proteins Direct Crystal Growth One Step at a Time (w/ Video)

Watching Proteins Direct Crystal Growth One Step at a Time (w/ Video)

Nanotechnology / Nanophysics

created Dec 16, 2009 | popularity 5 / 5 (2) | comments 0

(PhysOrg.com) -- Scientists at Berkeley Lab's Molecular Foundry imaged the growth of protein-studded mineral surfaces with unprecedented resolution and provided a glimpse into how living systems engineer key ...





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New Study of Meteorite Provides More Evidence for Ancient Life on Mars

New Study of Meteorite Provides More Evidence for Ancient Life on Mars

Space & Earth / Space Exploration

created 8 hours ago | popularity 4.9 / 5 (19) | comments 10

(PhysOrg.com) -- In 1996, when scientists examined a meteorite from Mars previously uncovered in Antarctica, they were intrigued by what looked like microscopic fossils of ancient Martian life forms. Now, ...


Light used to map effect of neurons on one another

Light used to map effect of neurons on one another

Medicine & Health / Neuroscience

created 6 hours ago | popularity 5 / 5 (2) | comments 0

(PhysOrg.com) -- Scientists at Harvard University have used light and genetic trickery to trace out neurons' ability to excite or inhibit one another, literally shedding new light on the question of how neurons ...


New research may help to clean drainage from abandoned mines

New research may help to clean drainage from abandoned mines

Space & Earth / Environment

created Dec 16, 2009 | popularity 4.7 / 5 (3) | comments 0

(PhysOrg.com) -- In a quiet green glen near Ashville, Pa., lies a rust-colored pond. A deep, rectangular hole in the ground, it somewhat resembles an Olympic-sized pool. Few people, however, would make the ...


Breathlessness eased in patients with rare, often fatal disease

Medicine & Health / Diseases

created 5 hours ago | popularity not rated yet | comments 0

Patients with a rare, deadly disease that mostly affects young women felt a dramatic reduction in breathlessness using an approved drug, according to study results published online today in The Journal of Heart and Lung Tr ...



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