Word of the day: “xanthophylls” - the class of pigments responsible for the yellows in both autumn leaves & egg-yolks….

Word of the day: “xanthophylls” - the class of pigments responsible for the yellows in both autumn leaves & egg-yolks. Xanthophylls are present year-round, but as chlorophyll breaks down each fall, many-splendoured yellows – gold, ochre, lemon, amber – are disclosed by decay. pic.twitter.com/URTRTYYe3a

— Robert Macfarlane (@RobGMacfarlane) November 8, 2018

(via http://twitter.com/RobGMacfarlane/status/1060426799610499073)