Regulates air emissions from stationary and mobile sources; sets NAAQS.

International treaty to protect the ozone layer by phasing out ozone-depleting substances.

Comprehensive plan to reduce air pollution in the EU across sectors.

Plan to address Beijing's air pollution, including limiting cars and promoting clean energy.

Reduces vehicle emissions and traffic congestion.

Lowers demand for fossil fuels and reduces air pollution.

Reduces greenhouse gas emissions and reliance on fossil fuels.

Increases carbon sequestration and improves air quality.

Reduces energy consumption and promotes sustainable resource use.

Reduces methane emissions from landfills and promotes recycling.

Reduces emissions from fertilizers and promotes soil health.

Convert harmful gases (CO, NOx, hydrocarbons) into less harmful ones (CO2, O2, N2, H2O).

Use high voltage to ionize particles, then attract them to charged plates for removal.

Reduces greenhouse emissions and eliminates combustion particulates.