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Science News for December 8, 1998


Magma--Making Long Valley Caldera Rise

A new study confirms that magma is forcing Long Valley Caldera to rise, which could lead to a volcanic eruption in the future. The researchers used precise gravity measurements to distinguish between magma and water, finding a systematic increase in mass beneath the resurgent dome.

Unknown contaminant found in seabird eggs

A previously unknown contaminant similar to PCBs and dioxins has been found in the eggs of Atlantic and Pacific Ocean seabirds, with concentrations significantly higher in Pacific Ocean eggs. The study suggests that the contaminant exists primarily in the surface layer of the ocean.

SourceAmerican Chemical Society·JournalEnvironmental Science & Technology·DateDec 8, 1998