calcium carbonate

Sea shells for sale: A new source of sustainable biomaterials

“Mollusc shells are viewed by the aquaculture and seafood industries as 'nuisance waste' and largely disposed of in landfills”, says Dr Morris. “Not only is…

Sea urchin protein provides insights into self-assembly of skeletal structures

Calcium carbonate, or CaCO3, comprises more than 4% of the earth's crust. Its most common natural forms are chalk, limestone, and marble, produced by the…

Secrets of the calcerous ooze revealed

How can we know anything about the carbon dioxide levels in the atmosphere in earth's deep past? Tiny bubbles trapped in ice provide samples of ancient air but…

Sustainable ceramics without a kiln

The manufacture of cement, bricks, bathroom tiles and porcelain crockery normally requires a great deal of heat: a kiln is used to fire the ceramic materials…

From rocks in Colorado, evidence of a 'chaotic solar system'

Plumbing a 90 million-year-old layer cake of sedimentary rock in Colorado, a team of scientists from the University of Wisconsin-Madison and Northwestern…

High-tech mooring will measure beneath Antarctic ice

Earth's oceans have soaked up about a third of the carbon dioxide added to the atmosphere by humans through use of fossil fuels and other activities. That's…

Plants are „biting“ back

Animals only eat them once: When the tongue touches the minute trichomes of rock nettles (Loasaceae), the tips of the stinging hairs break off and a painful…

Ocean acidification takes a toll on California's coastline at nighttime

When carbon dioxide emissions from cars or power plants are absorbed by the oceans, it changes seawater chemistry and makes it more acidic, a process called…

How seashells get their strength

Seashells and lobster claws are hard to break, but chalk is soft enough to draw on sidewalks. Though all three are made of calcium carbonate crystals, the hard…

Rapid plankton growth in ocean seen as sign of carbon dioxide loading

A microscopic marine alga is thriving in the North Atlantic to an extent that defies scientific predictions, suggesting swift environmental change as a result…

Page
1 2 3 4 7