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Early Residents of the Pacific Northwest Smoked Smooth Sumac Researchers used a new technique to detect the chemical fingerprints of specific plant species in a 1,400-year-old pipes residue A new technique for analyzing ancient plant residue has yielded evidence that Native Americans living in what is now Washington State smoked smooth sumac and wild tobacco some 1,400 years ago, reports David Szondy for New Atlas

However, as previously mentioned it is possible that these associations are due to many underlying common causal factors.

In meantime, if you are using cleaners with potentially harmful chemicals, take precautions while cleaning, such as keeping the room well ventilated, fans and other air circulators on, and doors and windows open

(0/0) Blind taste testers agree