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The San Vicente reservoir in San Diego County stores water from as far away as the Colorado River. Pumping water into a smaller reservoir in the surrounding mountains could store excess solar power until it's needed, when the sun sets.

'Water batteries' could store solar and wind power for when it's needed

San Diego has an ambitious plan to store renewable energy, using extra solar power to pump water up a mountain. This old-style "water battery" technology could be set for a revival.

This congressional staff became the first in U.S. history to form a union

The Congressional Workers Union announced Monday that the office of Rep. Andy Levin, D-Mich., has won their union election — the first one to do so on the Hill.

Alva Sulaty stands in front of her home in North Port, Fla., on Wednesday, Oct. 5, one week after Hurricane Ian roared through her neighborhood.

North Port residents start sorting through the wreckage of Hurricane Ian

The town of North Port, Fla., was hit hard by Hurricane Ian, and then days of river flooding. As the waters start to recede, residents are starting to dry out and take stock of the damage.

A pickup rolls through downtown Richmond, Vt., on Wednesday. A town employee is under fire for lowering fluoride in the drinking water below the state's recommended level.

A town employee quietly lowered the fluoride in water for years

Residents of a small Vermont community were blindsided by news that a water department official lowered fluoride levels nearly four years ago, giving rise to worries about children's dental health.

President Joe Biden delivered remarks at an event in the Port of Los Angeles, touching on inflated gas prices.

What's causing inflation? One expert walks through some of the factors

As many Americans continue to struggle financially because of inflation, we set out to clear the air on some common claims about what's going on.

Occidental College in Los Angeles on Dec. 20, 2022.

Colleges experiment with restorative justice in sexual assault cases

Some California colleges are responding to campus sexual assault and harassment with restorative justice: a process that brings together the student who was harmed, the person who harmed them and the community to seek solutions.

An overflow crowd packs the Temecula City Council chambers on Sept. 27th, 2022, as council members debate a proposal to declare the city a sanctuary for the unborn.

Temecula City Council rejects anti-abortion resolution — but it could return

Temecula’s city council decided against advancing an anti-abortion proposal. But it may not be the end of the matter.

Every state except Hawaii and Arizona currently observes daylight saving time. But each year, more states say it's time to stop futzing with the clock and embrace daylight saving time year-round.

Daylight saving time ends Sunday. Here are 4 things you should know

More than a third of U.S. states now support the idea of making daylight saving time permanent.

A boy works in a coal mine north of Kabul. Afghanistan's state-run coal industry is going strong in an otherwise shattered economy. Many underage workers are the ones who are extracting the coal.

In Afghanistan, coal mining relies on the labor of children

Since the return of the Taliban, Afghanistan's coal exports have increased — and so has child labor. At a coal mine in Baghlan province, boys earn between $3 and $8 for a day's work.

The baby calf and mother Bibi are healthy, and the zoo says they are "inseparable."

Fiona the Hippo gets a little brother

Fiona the Hippo got a baby brother last week. Her 23-year-old mom gave birth to a healthy calf, who has not been named yet.

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