Latest Peter Clark Stories
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.
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.
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 â€“ they are ultimately linked to slight shifts in solar radiation caused by predictable changes in Earth's rotation and axis.
The worldâ€™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.
Sea levels could rise up to 21 feet in certain regions, according to a new report that takes into account new previously unconsidered factors.
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 â€“ raising disturbing concerns about sea level rise.
- In medieval musical notation, a sign or neume denoting a shake or trill.