Caltrain operates the busiest commuter rail system in the western U.S ... lead author Samuel Cliff quickly mobilized, installing black carbon detectors at Caltrain stations and carrying portable ...

Caltrain operates the busiest commuter rail system in the western U.S ... lead author Samuel Cliff quickly mobilized, installing black carbon detectors at Caltrain stations and carrying portable ...

The electrification of trains has led to a significant reduction in toxic black carbon ... on the San Francisco Bay Area's Caltrain commuter rail line has dramatically improved air quality.

Innovative technology to calculate travel carbon emissions has highlighted rail travel as kinder to the planet with 10 times less CO2 releases, compared to driving a car. The carbon ...