Neanderthal nursing, Antarctica's singing snows, Fish and hook injuries and more, Our purple planet, Evolution goes to town and why two ears don't hear louder than one.

Quirks and Quarks

Neanderthals nursed their sick and injured back to health with ancient medicine; Listen to the Antarctic ice sheet sing a song of melting ice; There's a catch to 'catch and release:' hook injuries interfere with fish feeding; Purple reign: life on Earth might once have been dominated by purple micro-organisms; Evolution is going uptown as plants and animals adapt to city life; Why is the sound we hear in two ear buds not twice as loud as the sound from one?

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