We replaced standard batteries with hydrogen fuel cells at our Washington, D.C. mail processing facility. This technology increases safety and workplace productivity and reduces greenhouse gas emissions. #postalfacts #USPSGreenerThanYouThink #sustainability #earthday50pic.twitter.com/K4hcEfDL4s

We replaced standard batteries with hydrogen fuel cells at our Washington, D.C. mail processing facility. This technology increases safety and workplace productivity and reduces greenhouse gas emissions.

from https://youtu.be/GuUaaPaTlyY
April 14, 2020 at 06:52AM