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The nineteenth day of May, 1780, began in New England like any other pretty, late-spring morning. Fruit blossoms dangled heavy in the warm, newly risen sun. The scent of nectar brought drowsy honeybees from their straw hives. The dawn chorus of songbirds chirped and echoed across the sleepy countryside as farm laborers yoked their horses to heavy wooden ploughs and carts ready for the day ahead. But by mid-morning the pastoral calm would be turned on its head. Laborers and schoolchildren would be scurrying home for shelter. By noon, birds would be roosting in the trees and bats would be...

Break out the flashlights. When a full lunar eclipse takes place on the shortest day of the year, the planet may just get awfully dark. The upcoming Dec. 21 full moon -- besides distinguishing itself from the others in 2010 by undergoing a total eclipse -- will also take place on the same date as the solstice (the winter solstice if you live north of the equator, and the summer solstice if you live to the south). Winter solstice is the shortest day of the year in the Northern Hemisphere and marks the official beginning of winter. The sun is...

Had it appeared on the SciFi Channel, “Supervolcano” would have received little attention other than a few random reviews. Instead, it was broadcast on Discovery and was hyped even to the point of having trailers appear in movie theaters. According to the advertising, “This is a true story. It just hasn’t happened yet.”

Determining a reliable calendrical age of the Santorini (Minoan) eruption is necessary to place the impact of the eruption into its proper context within Bronze Age society in the Aegean region. The high-resolution record of the deposition of volcanically produced acids on polar ice sheets, as available in the SO42-time series from ice cores (a direct signal), and the high-resolution record of the climatic impact of past volcanism inferred in tree rings (a secondary signal) have been widely used to assign a 1628/1627 age to the eruption. The layer of ice in the GISP2 (Greenland) ice core corresponding to...

A thought about ice cores just occurred to me, and I need someone in the know to verify or refute this argument. Scientists claim to know what the temperature was in past years primarily by drilling ice core samples. They measure levels of specific gasses, like carbon dioxide, that are trapped within the layers of the ice, and somehow they calculate the temperature for that time based off of "certain assumptions" (none of which are mentioned in the wikipedia article). That is rather dubious inandof itself, but I want to take that thought in a different direction. We all know...

A restless volcano near Alaska's most populated region is being watched by scientist and officials, who warned on Thursday of the risk of clouds of ash and a tsunami from a possible eruption. The intensifying rumblings in the past few weeks at Augustine Volcano, an island peak 175 miles southwest of Anchorage in Cook Inlet, have produced a series of steam explosions, releases of sulfur gas and signs that there may be an eruption similar to events in 1986 and 1976 which sent ash clouds as high as 40,000 feet, scientists said. There has even been an increase of 1...

The White River Ash blasted from giant eruptions somewhere in today's Wrangell-St. Elias Mountains, drifted as far away as Ireland and Germany... Ash from the White River eruptions, possibly from 15,638-foot Mount Churchill or at least close to it, left an easy-to-see mark on eastern Alaska and northwestern Canada. Explorer Frederick Schwatka documented the ash in 1885 in his book "Along Alaska's Great River." People driving the Klondike Highway pass more than two feet of the whitish grit exposed in road cuts on their journey through the Yukon Territory... Froese and Jensen traveled in the Yukon to a branch of...