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Moqui marbles and Martian Blueberries

The photo above shows Moqui Marbles in their native habitat of southern Utah. These curious rocks are actuallyconcretions having iron (hematite) rinds. Very similar rocks, called blueberries, have been observed repeatedly on Mars by the rovers.

Unfinished residential building

Laborers install ledges on the balcony of an apartment at an unfinished residential building in Nanjing, Jiangsu province, on March 11, 2011.(Reuters/Sean Yong)

Prosthetics As Works Of Art (18 pictures)

Bespoke Innovations, founded by industrial designer Scott Summit and orthopedic surgeon/engineer Kenneth Trauner, MD, creates custom fairings, which are panels that fit over existing prosthetics. They can be easily swapped out, too, so you could switch between ornate metal or leather fairings for a nice evening out and lightweight polymer fairings for more physical activities.