"Finnish schools, shoes are taken off by coat racks near the classrooms (shoe schools). The new course of action is to take shoes off right when entering the building (sock schools)...concentrations in corridors were significantly higher in shoe schools compared to sock schools...elemental concentrations (Li, Al, Si, Cr, Mn, Fe, Co, Ni, Cu, Zn, Cd, Ba, Pb) in settled dust were also higher in shoe schools compared to sock schools"
"Contaminants tracked in from outside, such as lawn pesticides and lead dust from work or home renovation: Use a doormat, remove shoes at the door, and plant shrubs and grass to help reduce dust levels and limit the potential to track dust indoors."
"...estimated that between 9,000 and 400,000 metric tonnes of microplastics are released from shoes globally per year from regular use...trail running events deposit significant plastic fibres and rubber fragments onto soil...100 runners release about 425,000 rubber particles over a 10 km race...85% of used shoes in the UK were sent to the dump rather than recycled or reused...once they're in the landfill, shoe plastics degrade...and release ethylene and methane, two potent greenhouse gases"
"We recommend not heating food in plastic containers, because chemicals leach from that plastic into the food product...placing plastic in the dishwasher can have a similar leaching effect by degrading plastic containers...[prevent exposure by] taking off your shoes when coming inside, to removing dust, and vacuuming frequently."
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