News tagged with calcium carbonate

'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

New model suggests ocean pH falling more rapidly

(Phys.org) -- A new computer model developed in Switzerland shows that the pH of the ocean waters off the west coast of the US will fall over the next four decades faster than previously thought. The region ...

Jun 15, 2012 report
3.7 / 5 (26) 23 | with audio podcast

Unprecedented, man-made trends in ocean's acidity

Recent carbon dioxide emissions have pushed the level of seawater acidity far above the range of the natural variability that existed for thousands of years, affecting the calcification rates of shell-forming ...

Jan 22, 2012
4 / 5 (20) 29 | with audio podcast

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

Effect of ocean acidification may not be so dire

(Phys.org) —Marine scientists have long understood the detrimental effect of fossil fuel emissions on marine ecosystems. But a group led by a UC Santa Barbara professor has found a point of resilience in ...

Apr 15, 2013
5 / 5 (13) 16 | with audio podcast

Major changes needed for coral reef survival

To prevent coral reefs around the world from dying off, deep cuts in carbon dioxide emissions are required, says a new study from Carnegie's Katharine Ricke and Ken Caldeira. They find that all existing coral ...

Jun 28, 2013
4.2 / 5 (15) 17 | with audio podcast