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Some of the most remarkable advances in modern medicine have their origins in space technology. During a mission the physical condition of astronauts is constantly being monitored by tiny light-weight sensors glued to the body; each contains a miniature transmitter.

4

Conjoined twins, a teen who survived without a heart, and various other instances prove that humans are indeed a race willing to fight to survive.

13

A look at conjoined twins, because sometimes nature goes wrong, and you just cannot help but look.

7

Science in modern age.