Unhealthy Air Threatens Millions by 2100
Ozone and PM2.5 pollutants drive air quality deterioration on hotter days.
Unmitigated climate change could add 28 alert days for sensitive groups by 2100, costing $52 billion.
Older adults bear most health burden from worsening air quality.
Staying indoors won't offset rising risks; long-term protective adaptations are needed.
California and eastern U.S. face sharpest rise in health alerts.
1 week ago