Are you breaking the law if you warm up your car in your state?

While there is no national law against idling a vehicle, some states have anti-idling laws to prevent air pollution. The punishment and exact anti-idling measures vary from state to state, and even city or county, with penalties ranging from fines to written warnings.

Renewed push for all-lane freeway tolls in the Bay Area

Metropolitan Transportation Commission (MTC) officials believe that applying market principles of supply and demand to freeway driving could potentially result in tolls for all lanes, with the aim of reducing congestion and curbing carbon emissions.

Video: Governor Newsom takes down a kid during basketball game in Beijing

Video of California Gov. Gavin Newsom accidentally toppling over a child while playing basketball with a group of young students at a Beijing elementary school has been getting a lot of attention on social media.

Scientists calculate Earth will likely cross crucial warming threshold in early 2029

In a little more than five years – sometime in early 2029 – the world will likely be unable to stay below the internationally agreed temperature limit for global warming if it continues to burn fossil fuels at its current rate.

Climate activists occupy Wells Fargo lobby in San Francisco

Climate activists occupied the lobby of a Wells Fargo office building in San Francisco's Financial District on Thursday morning.

San Jose named Bay Area's greenest, most sustainable city

There were four Bay Area cities in the top ten on this list, but it was San Jose that scored the highest when it comes to having cleaner and more sustainable living.

Yountville's boil water order lifted after officials say water supply is safe

The town of Yountville said at 3:08 p.m. Sunday it lifted the mandatory order for residents to boil water before consumption that was issued Friday after E. coli was detected in the municipal water supply.     

New vaccine expected to give endangered California condors protection against deadly bird flu

Antibodies found in early results of a historic new vaccine trial are expected to give endangered California condors at least partial protection from the deadliest strain of avian influenza in U.S. history.

Too Good to Go app sells day-old food at steep discount to fight waste

Bakeries, which typically offer "surprise" bags filled with the day’s leftover pastries and breads, have been among the more popular choices for app users.