Calcium: Good for bones, good for cultural conservation

When it comes to cultural heritage sites, there are few things historians wouldn't do to preserve them for future generations. In particular, stone buildings and sculptures made of plaster and marble are increasingly at risk ...

When kinetics and thermodynamics should play together

The formation of calcium carbonate (CaCO3) in water has ramifications for everything from food and energy production to human health and the availability of drinkable water. But in the context of today's environment, simply ...

Using bacteria to protect roads from deicer deterioration

Tiny bacteria could soon be chipping in to keep roads from chipping away in the winter, according to Drexel University researchers who are looking into new ways to make our infrastructure more resilient.

How sponges undermine coral reefs from within

Coral reefs are demolished from within by bio-eroding sponges. Seeking refuge from predators, these sponges bore tunnels into the carbonate coral structures, thus weakening the reefs. Scientists from the Royal NIOZ Netherlands ...

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Calcium carbonate

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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