When the landmass that is now the Indian subcontinent slammed into Asia about 50 million years ago, the collision changed the configuration of the continents, the landscape, global climate and more. Now a team of Princeton University scientists has identified one more effect: the oxygen in the world’s oceans increased, altering the conditions for life. (more…)
Geologist Adam Wallace reports in ‘Science’ that calcium carbonate has a dense liquid phase
Computer simulations could help scientists make sense of a recently observed and puzzling wrinkle in one of nature’s most important chemical processes. It turns out that calcium carbonate — the ubiquitous compound that is a major component of seashells, limestone, concrete, antacids and other naturally and industrially produced substances — may momentarily exist in liquid form as it crystallizes from solution.
“Our simulations suggest the existence of a dense liquid form of calcium carbonate,” said co-corresponding author Adam Wallace, an assistant professor of geological sciences in UD’s College of Earth, Ocean, and Environment who conducted the research while a postdoctoral researcher at the Lawrence Berkeley National Laboratory. “This is important because it is an as-yet unappreciated component of the carbon cycle.” (more…)
*Projections for the future still loom large*
The seas are creeping higher as the planet warms. But how high could they go?
Projections for the year 2100 range from inches to several feet, or even more.
The sub-tropical islands of Bermuda and the Bahamas are two seemingly unlikely places scientists have gone looking for answers. (more…)
The heart’s inner workings are mysterious, perhaps even more so with a new finding. Engineers at the University of Washington have discovered an electrical property in arteries not seen before in mammalian tissues.
The researchers found that the wall of the aorta, the largest blood vessel carrying blood from the heart, exhibits ferroelectricity, a response to an electric field known to exist in inorganic and synthetic materials. The findings are being published in an upcoming issue of the journal Physical Review Letters. (more…)
*Scientists have successfully created synthetic crystals whose structures and properties mimic those of naturally-occurring biominerals such as seashells.*
*The findings, published in the journal Nature Materials, could be an important step in the development of high-performance materials, which could be manufactured under environmentally-friendly conditions.*
Professor Stephen Eichhorn, who has just moved to the University of Exeter from the University of Manchester, played a key role in the research. Professor Eichhorn has been appointed to a Chair in Functional Materials, through the University of Exeter’s £230 million investment in science, medicine and engineering. Exeter’s vision is for a multidisciplinary and interdisciplinary approach to the understanding and application of functional materials – from fundamentals to manufacture – exploiting world-leading materials knowledge to deliver new concepts, processes and products. (more…)
