Colour - The Spectrum of Science episode 2

Colour - The Spectrum of Science episode 2: The raw, early Earth had plenty of colour, but that canvas was about to be painted with a vast new palette - and the source of those colours was life.
Last Science posts on HDclump.com:
https://hdclump.com/the-story-of-science-episode-3-how-did-we-get-here/
https://hdclump.com/the-story-of-science-episode-2-what-is-the-world-made-of/
https://hdclump.com/the-story-of-science-episode-1-what-is-out-there/
https://hdclump.com/the-story-of-electricity-episode-3-revelations-and-revolutions/
https://hdclump.com/the-story-of-electricity-episode-2-the-age-of-invention/
https://hdclump.com/the-story-of-electricity-episode-1-spark/
https://hdclump.com/secrets-of-the-super-elements/
https://hdclump.com/the-artificial-intelligence-race/
https://hdclump.com/v-day-volcanic-planet/
https://hdclump.com/beautiful-equations/