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The U.S. Marshals Office confirmed authorities have arrested Silvestre Franco-Luviano. He was arrested at an apartment complex in Georgetown.
Atmospheric oxygen levels have declined over the past 1 million years, although not nearly enough to trigger any major problems for life on Earth, a new study finds.
Good news on the alien-life-hunting front: The towering plumes emanating from Jupiter's ocean-harboring moon Europa appear to be real.