This policy update explores the U.S. multi-pollutant emissions standards for model years 2027 and later, which establish new ...

Delaying standards also leads to higher total cost of ownership per vehicle (due to higher lifetime fuel costs), higher ...

Assesses global shipping emissions over 2016–2023 using updated, state-of-the-science methods, providing new insights into the maritime shipping sector's recent climate and environmental performance.

States that have implemented the Advanced Clean Cars II (ACC II) program are leading the way in the adoption of clean vehicle ...

Explores Boom Supersonic's claim of achieving “Boomless Cruise” and what it means for the future of supersonic flight.