Purple Earth

Purple Earth

Purple Earth hypothesis suggests that early life forms on Earth may have been able to generate metabolic energy from sunlight using a purple-pigmented molecule called retinal that possibly predates the evolution of chlorophyll and photosynthesis. As a consequence, early Earth’s landmass may have looked purple.

Previous Fact Next Fact
Categories: NatureWorld

Latest FactRepublic Video

20 Scary Mental & Psychological Illnesses - Part 1