Six of nine planetary boundaries—climate change, deforestation, biodiversity loss, synthetic chemicals including plastics, freshwater depletion, and nitrogen use—are already deep in the red zone, an international team of 29 scientists reported.
A team at the University of British Columbia says brain scans show increased impairments in brain function after exposure to traffic pollution. In fact, signs of decreased brain function can start to appear in as little as two hours.
Around 4.5 billion people throughout the world are currently exposed to levels of particulate air pollution at least twice the levels the WHO considers safe.
