Waste management experts say Thailand is becoming "the garbage bin of the world."
Some schools got air filters. Others didn't, and a difference in test scores suggests the filters are the reason.
Microplastics are pernicious pollutants with the tiny particles having spread far and wide across the planet.
If you feel blue quite a lot, you may do well to head to a place with clean air.
"When you change one thing, it has cascading effects through the system," says researcher Peter Weiss-Penzias.
Reducing exposure to toxic air has immedient health benefits, the authors of a new study have found.