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Extreme weather tough on transportation system
NASA scientists eyeing regional dust storm on Mars
Study: Distant dwarf planet has no atmosphere
Dark matter detector nearing activation in SD mine
New Zealand volcano erupts; dozens of hikers safe
UN says greenhouse gases at record high in 2011
Study: NJ beaches 30-40 feet narrower after storm
Even apes have 'midlife crises,' study finds
California sells out of first pollution permits
Violent dolphin deaths a mystery for scientists