It’s unclear if falling gas prices will make the agreement an easier political sell since unemployment is also surging.
Cambridge could be the first city in the country to require the labels but would likely face lawsuits from oil interests.
As driving and gasoline consumption decline, cash-strapped states scouting for ways to pay for critical road work are increasingly looking to tolls.
Electric vehicle technology has a bright future, says a leading industry analyst, but the focus for the near future will continue to be developing internal-combustion engines that meet tightening economy standards while still being affordable to consumers.
A behavioral economist explains why we can recite the price of gasoline but not, say the cost of a head of lettuce.