Eric Westervelt

Within hearing the first 3 gunshots, staff at Rancho Tehama Elementary School immediately started lock-down procedures they'd practiced for years. Their fast action is credited with saving lives.

More details are coming out about the shooting in northern California Tuesday. The shooter's wife is now among the dead. Investigators say his two assault rifles were home-built, unregistered and illegal.

The army in Zimbabwe has seized control of the country, though they say it's not a coup. Also, Republican lawmakers are looking at options to keep Roy Moore out of the Senate.

A small, rural northern California town is the latest scene of a mass shooting, leaving five dead, including the shooter. A man randomly shot people at different locations across town.

An influential judicial panel recommends that California abolish commercial bail, declaring it "unsafe and unfair." The panel's report, released today, says bail should be replaced with a risk assessment system and expanded pre-trial services.

Officials say they have made some progress in containing the northern California wildfires, but crews have been working for days on steep terrain with little rest and no real end in sight.

Nearly two dozen deadly wildfires in Northern California are burning across eight counties. They have burned more than 100,000 acres, and they're not under control yet.

Winds are expected to pick up and possibly refuel the wildfires spreading across northern California. The fires have left at least 21 people dead. But authorities say the death toll is likely to rise.

Underscoring the severity of the U.S. overdose crisis, a first-of-its kind opioid intervention court aims to get drug-addicted criminal defendants into recovery before their criminal case is heard.

Officials released more details about the weapons used in the shooting in Las Vegas and federal agents met his girlfriend when she returned to the U.S. But many unanswered questions remain.

Law enforcement officials are still searching for a motive in the mass shooting. Computers found at the gunman's home may hold more clues about him and the reasons behind the attack.

Volunteer counselors and therapists are reaching out to people who were on the scene of the deadly shooting in Las Vegas. Thousands of people witnessed the massacre up close.

In the latest battle between the Trump administration and sanctuary cities, Immigration and Customs Enforcement officers this week arrested hundreds of people in a nationwide sweep.

Far-right activists are set to hold 2 rallies in the San Francisco Bay Area. The Bay area is a mecca for free speech and political activism, but for some, the upcoming alt-right rallies go too far.

More than 40 criminal cases have been dropped in Baltimore after police body cameras show officers there allegedly planting drug evidence. Public defenders say hundreds more could be dismissed.

Minecraft, one of the most popular video games in the world, is touted for its educational possibilities. But is that potential really accessible to all?

The Department of Homeland Security announces that it would waive environmental and other laws to ensure the "expeditious construction" of barriers and roads near the U.S.-Mexico border.

The NBA's all-time leading scorer talks about the importance of STEM and his education foundation, and its support for a science camp for public school children in Los Angeles.

The Golden State Warriors defeated the Cleveland Cavaliers in Game 5 of the NBA Finals, winning the title in the stellar teams' third match-up in as many years.

Stanford's Carl Wieman won a Nobel Prize for his groundbreaking work in quantum mechanics. With a new book, he continues his efforts to spark systemic changes in how universities teach science.