News tagged with calcium carbonate

How soft corals defy their environment

Many marine organisms, including corals, build skeletons from calcium carbonate -- in the form of calcite or aragonite. The current composition of seawater favors the formation of aragonite -- but soft corals have a specific ...

Aug 16, 2011
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Soft coral builds strong reefs

Scientists have long believed soft corals, one of the many endangered elements of marine life, are only minor contributors to the structure of coral reefs. But that's not true, says new research from Tel Aviv ...

Aug 16, 2011
5 / 5 (2) 0

Shells slim down with CO2

Marine algae that turn carbon dissolved in seawater into shell will produce thinner and thinner shells as carbon dioxide levels increase.

Aug 09, 2011
4.2 / 5 (6) 0 | with audio podcast

Surprises from the ocean: Marine plankton and ocean pH

The world's oceans support vast populations of single-celled organisms (phytoplankton) that are responsible, through photosynthesis, for removing about half of the carbon dioxide that is produced by burning fossil fuels – ...

Jun 21, 2011
4.4 / 5 (5) 3 | with audio podcast

CO2 makes life difficult for algae

The acidification of the world's oceans could have major consequences for the marine environment. New research shows that coccoliths, which are an important part of the marine environment, dissolve when seawater acidifies.

May 10, 2011
4.7 / 5 (3) 11

Skeletons in the pre-Cambrian closet

The Cambrian explosion marked a major blossoming in the tree of life around 540 million years ago. Nearly all of the major phyla in the animal kingdom appeared in a sudden burst of evolution. One of the drivers ...

Jan 07, 2011
4.9 / 5 (14) 3 | with audio podcast

'BacillaFilla' for concrete cracks

A bacteria that can knit together cracks in concrete structures by producing a special 'glue' has been developed by a team of students at Newcastle University.

Nov 12, 2010
5 / 5 (26) 13 | with audio podcast