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Earth Science

Tucson in 100 Objects — gems

Tucson in 100 Objects — gems

You might not find a hotel room in February in Tucson, but you can find a gem of a deal.

June 27, 2014 12:00 amLoading…

Curiosity rover discoveries show Mars to be more complex than had been known

Discoveries by NASA’s Curiosity rover are giving scientists a picture of Mars that looks increasingly complex, with small bits of water spread around the surface and an interior that could have been more geologically mature than experts had thought.

September 29, 2013 12:00 amLoading…

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