Much like its predecessor, the explosion did not appear to have a significant effect on the flow of lava, says Hannah Dietterich, a geophysicist at the USGS Alaska Volcano Observatory. As powerful ...

U.S. Proposes Interim Step in Iran Nuclear Talks, Allowing Some Enrichment An outline by the U.S. would allow Iran to continue enriching uranium at low levels as a deal is worked out that would ...

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