Latest Peter Clark Stories

2010-09-07 09:36:56

An Oregon State University research program has returned to Collier Glacier for the first time in almost 20 years and found that the glacier has decreased more than 20 percent from its size in the late 1980s. The findings are consistent with glacial retreat all over the world and provide some of the critical data needed to help quantify the effects of global change on glacier retreat and associated sea level rise. Flowing down the flanks of the Three Sisters in the central Oregon Cascade...

2010-08-06 09:10:00

Boulders deposited by an ancient glacier that once covered the summit of Mauna Kea on the island of Hawaii have provided more evidence of the extraordinary power and reach of global  change, particularly the slowdown of a North Atlantic Ocean current system that could happen again and continues to be a concern to climate scientists. A new study has found geochemical clues near the summit of Mauna Kea that tell a story of ancient glacier formation, the influence of the most recent ice...

2009-08-06 14:52:54

 Researchers have largely put to rest a long debate on the underlying mechanism that has caused periodic ice ages on Earth for the past 2.5 million years "“ they are ultimately linked to slight shifts in solar radiation caused by predictable changes in Earth's rotation and axis.In a publication to be released Friday in the journal Science, researchers from Oregon State University and other institutions conclude that the known wobbles in Earth's rotation caused global ice levels to...

2009-07-17 06:40:00

The world's glaciers are indeed melting, but a monumental study released Thursday in the journal Science discovered that it might not happen as quickly as once thought. The study notes that there are more gradual shifts in the current systems in the North Atlantic Ocean, instead of a rapid meltdown that could cause swift climate changes to Europe and other places. The research, based on a "general circulation model" that replicated the Earth's climate 21,000 years at the height of the last...

2009-02-06 11:52:42

Sea levels could rise up to 21 feet in certain regions, according to a new report that takes into account new previously unconsidered factors. Geophysicists from the University of Toronto have previously reported that coastlines of North America and of nations in the southern Indian Ocean could face the greatest threats from a West Antarctic Ice Sheet collapse. But in a new report, scientists found that some estimates failed to take certain factors into account. "We aren't suggesting that a...

2005-10-20 14:25:00

CORVALLIS, Ore. -- The rapid structural breakdown of some important parts of the ice sheets on Greenland and Antarctica is possible, has happened in the distant past, and some "startling changes" on the margin of these ice masses has been observed in recent years "“ raising disturbing concerns about sea level rise. In a new report to be released Friday in the journal Science, researchers from Oregon State University and four other institutions in the U.S. and Europe outline...

Word of the Day
  • A bookseller; now, especially, a dealer in rare and curious books.
This word comes from a Greek phrase meaning 'book seller.'