We be of one kin, you and I.
The chemical formulas for chlorophyll and for hemoglobin are virtually identical, differing by only a single atom:
C55H72FeN4O6 (hemoglobin)
C55H72MgN4O6 (chlorophyll)
Greenblood, redblood: We be of one kin, you and I.
Long ago in the Dawn of Days, Earth took the Sky Twins to be her husbands: Sun, her right-hand husband, and Thunder, her left-hand husband.
From their love also came forth twins: first the Green and then the Red, him that we call the Horned, father of witches.
Science is one language, mythology another.
Some of us are privileged to dwell in that place of pagan felicity where the two coincide.