The Great Wall of China Is coated in a living substance that shields it from harm. Known as a biocrust, lichen, bacteria, fungi, moss, and other small plants can be found growing on just about any mineral surface exposed to the elements. - discu.eu

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The Great Wall of China Is coated in a living substance that shields it from harm. Known as a biocrust, lichen, bacteria, fungi, moss, and other small plants can be found growing on just about any mineral surface exposed to the elements. https://www.science.org/doi/full/10.1126/sciadv.adk5892 27 comments 11/12/2023 science