molecular structures and the word "forever chemical" in white blocks.

pfas acid scattered chemical chemistry science pollution research industry carcinogen environment discovery climate protection change three dimensional cube shape block molecular structure cut pharmaceutical compounding levitation white color scientific experiment single word toxic waste poisonous environmental issues technology eternity medical condition forever pfoa pfos polyfluoroalkyl pollutants perfluorooctanoic substances alternatives concerns harmful persistent enduring letter sustainable challenging bpa long-lasting toxicant cubes blocks compounds float isolated health rendering