Microrobots show promise for treating tumors

Targeting medical treatment to an ailing body part is a practice as old as medicine itself. A Band-Aid is placed on a skinned knee. Drops go into itchy eyes. A broken arm goes into a cast.

The skin cure fad threatening Myanmar's elephants

Under the shadow of Myanmar's famed "Golden Rock" punters haggle for the latest traditional medicine cure—slices of skin from the country's fast disappearing wild elephants sold for a few dollars a square inch.

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