Colour. The Spectrum of Science. Colours of Life. Episode 2

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Description

The raw, early Earth had plenty of color, but that was nothing compared with what was going to come next. That canvas was about to be painted with a vast new palette -- and the source of those colors was life. Green is the color of the natural world and yet it's the one color that plants have evolved not to use. The huge diversity of human skin tones tells the story of how humanity spread and ultimately conquered the planet. But the true masters of color turn out to be some of the smallest and most elusive. Helen Czerski travels to the Great Smokey Mountains of Tennessee during the one week in the year when fireflies light up the night sky with their colorful mating display. And she reveals the marine animals that hide from the world by changing the color of their skin.