San Jose has started what officials said today is the largest streetlight conversion project in the country.

Mayor Ed Lee is asking the SFPUC to launch a city-run clean energy program by the end of the year.

Marin Municipal Water District customers are conserving water more than the statewide average and the levels of the district's reservoirs are higher than ...

Single-use plastic bags will be banned at many stores in California starting next year after Gov. Jerry Brown signed a bill prohibiting their ...

Volunteers turned out by the thousands this weekend to help clean up the Bay Area's beaches as part of the 30th annual California ...

President Barack Obama proposed a $1 billion fund to mitigate climate change in the U.S.

While the East Coast gets slammed with an arctic blast, the West is bone dry.

The state Department of Toxic Substances Control has come under heavy fire this winter.

The US government predicts that photovoltaics will grow 11.6 percent each year until 2040.

A Brisbane man wants an modern, eco-conscious house built from environmentally-tainted Bay Bridge parts.

We’re still scratching our heads over why someone would go so far as to vandalize the brand-new Clement Street parklet.

In Brussels for a meeting of EU leaders, Arnold Schwarzenegger calls for a more "hip" and "sexy" environmental movement.

Palo Alto-based electric car maker Tesla posted its first-ever profit of $11 million in the first quarter.

The group responsible for enforcing "Spare the Air" days says they have decreased peak levels of gunk in Bay Area air.

Recology wants SF residents to shell out a few more bucks to cover the rising cost of disposing of their trash.

Thousands of people gathered on the waterfront Sunday demanding the Obama administration confront climate change.

In celebration of World Wetlands Day, several Bay Area wetlands officially became the nation's 35th "wetland of importance".

Recent concerns raised about San Francisco's renewable energy program, CleanPowerSF, shows that going green isn't always easy — or cheap.

A Silicon Valley nonprofit is looking for a few good ideas – to save the Earth.

California achieved a major milestone when it crossed 1 GW of installed solar power capacity recently.

As it turns out, the yellow pages clogging up your front door are two pounds of bound and printed free speech.

Like many things in The City, garbage is a process full of politics and intrigue. And it stinks.

President Barack Obama signed an executive order protecting large swaths of NorCal coast from oil drilling.

Fracking rules floated in California do little to allay concerns of residents and environmental groups.

SOMA startup Lit says they have 500 pre-orders for their futuristic, electric, gyroscopically-balanced motorcycle.

CleanPowerSF just got about 20 percent more expensive, less than a year before its scheduled rollout.

Big bad PG&E? or big bad Royal Dutch Shell? That's a choice San Francisco residents could face as soon as next year.

Mayor Ed Lee's new budget proposal slashes funding and leaves solar power in the dark.

The sleek new glass tower at Golden Gate and Polk is set to be the greenest building in the country. But being green ...

Renewable energy is good. Period. And the effort to give residents 50 to 100 percent reusable energy is massive.

A number of wine-making wonders are mixing California’s two favorite recreational crops.

Alvarado Elementary is set to become the first significantly solar-powered public school in The City.