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erin wayman

Down To Earth With: John Underhill

“The Odyssey” follows Odysseus’ 10-year journey home to Ithaca after the Trojan War. John Underhill, a stratigrapher at the University of Edinburgh in Scotland, has been on his own odyssey over the past seven years — to test whether Ithaca actually existed. For centuries, scholars assumed that the people and places described by Homer in his epic poems were fictional, but archaeological finds elsewhere, such as Troy and Mycenae, have proven that these stories were grounded in reality.
 
01 Jun 2011

Down to Earth With: Alexander Stewart

Sgt. Alexander Stewart was brought up to believe serving in the military was an obligation all young men should fulfill. In 1991, at the age of 17, he answered the call of duty and joined the U.S. Army, which took him to Alaska with the 6th Infantry Division (Arctic)(Light). The state’s endless snow and ice fascinated Stewart, and after he left active duty, he pursued a bachelor’s degree in geology. In 2007, he completed a doctorate at the University of Cincinnati — in glacial geology, of course. Now he teaches the subject at St. Lawrence University in New York.
 
04 Apr 2011

Benchmarks: April 9, 1895: James Edward Keeler confirms Saturn's rings not solid

On April 9 and 10, 1895, astronomer James Edward Keeler snapped the most important photographs of his life. With a 13-inch (33-centimeter) refracting telescope, Keeler captured proof that Saturn’s rings were not solid disks, but instead a collection of particles revolving around the planet. The discovery put to rest a question that astronomers had been pondering for more than two centuries.
 
01 Apr 2011

Keeler's legacy

James Edward Keeler led a brief life, but his legacy lives on. Scientists have named several natural phenomena after him.
 
01 Apr 2011

Saturn's rings: The remains of an icy moon

James Edward Keeler’s work didn’t end all speculation about Saturn’s rings. For example, scientists still don’t know when they formed, but researchers are getting closer to understanding how they came to be.
 
01 Apr 2011

Benchmarks: July 11, 1997: Neanderthal DNA unraveled

On July 11, 1997, six scientists announced they had sequenced DNA from a Neanderthal fossil. It was the first time anyone had analyzed the genetics of an extinct hominin, and the findings gave paleoanthropologists a new perspective on Neanderthals’ place in the human family tree.
The team, led by Svante Pääbo, then at the University of Munich in Germany, recovered the DNA from an upper arm bone. The bone was part of a collection of fossils discovered in 1856. Quarrymen working in the Feldhofer Cave in Germany’s Neander Valley found 16 bone fragments — including a skullcap, ribs, arms, legs and part of a hip — from several different individuals. The bones resembled human bones, but there were some striking differences: The skull had pronounced brow ridges and a low, sloping forehead, and the limb bones were extraordinarily thick.
11 Jul 2010