In total, over 400 people received semicolon tattoos in one day. "That money was a fundraiser for our crisis center," said Jenn. In 2014, The Semicolon Tattoo Project held an event at several tattoo shops where people could get a semicolon tattoo for a flat rate. Their size is exactly why experts are concerned about them, as they are small enough to invade human cells and potentially disrupt cellular processes. (The name of the brands were not indicated in the study.)Īs opposed to microplastics, nanoplastics are too small to be seen by microscope. In contrast to a 2018 study that found around 300 plastic particles in an average liter of bottled water, the study published in the journal Proceedings of the National Academy of Sciences in January of 2024 found 240,000 nanoplastic particles per liter bottle on average between the three brands studied. The new technology can detect, count and analyze and chemical structure of nanoparticles, and they found seven different major types of plastic: polyamide, polypropylene, polyethylene, polymethyl methacrylate, polyvinyl chloride, polystyrene, and polyethylene terephthalate. Researchers from Columbia University used a new laser-guided technology to detect nanoplastics that had previously evaded detection due to their miniscule size.
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