Tag Archives: don perovich

On Golden’s ice pond

National Science Foundation video features University of Utah mathematician Ken Golden

From the National Science Foundation

Oceanographers, marine biologists and geologists are the scientists most commonly associated with studying changes in sea ice. But these days, it just might be a mathematician drilling ice cores in the Antarctic. (more…)

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Ancient Fossil Reveals Oldest Known Circulatory System

A fossil creature buried in an “invertebrate version of Pompeii” more than half a billion years ago reveals the first-known cardiovascular system in exquisitely preserved detail.

An international team of researchers from the University of Arizona, China and the United Kingdom has discovered the earliest known cardiovascular system, and the first to clearly show a sophisticated system complete with heart and blood vessels, in fossilized remains of an extinct marine creature that lived over half a billion years ago. The finding sheds new light on the evolution of body organization in the animal kingdom and shows that even the earliest creatures had internal organizational systems that strongly resemble those found in their modern descendants. (more…)

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