Today is Primary Elections day in many parts of the country. Voters go to the polls in Virginia, Maine, Nevada,North Dakota, and South Carolina. But all eyes are on the special election that is taking place in Arizona, where the race to fill former representative Gabrielle Gifford's seat for her current term is occurring. That […]
SELFOSS, ICELAND—Giant volcanic eruptions in Nicaragua over the past 70,000 years could have injected enough gases into the atmosphere to temporarily thin the ozone layer, according to new research. And, if it happened today, a similar explosive eruption could do the same, releasing more than twice the amount of ozone-depleting halogen gases currently in stratosphere […]
(Santa Barbara, Calif.) –– An 18-member international team of researchers that includes James Kennett, professor of earth science at UC Santa Barbara, has discovered melt-glass material in a thin layer of sedimentary rock in Pennsylvania, South Carolina, and Syria.