The colors of rubies and emeralds are so striking that they define shades of red and green—ruby red and emerald green. But have you ever wondered how they get those colors? One feature of ...

But how can one element – chromium – create the red color of a ruby and green color of an emerald? Rubies and emeralds have the colors they do because, like many substances, they absorb some ...

VALLEJO, Calif. - A school in Vallejo is left without power after copper wire was stolen from the building, shutting down operations. Officials said the theft occurred sometime between Friday ...

VALLEJO, Calif. (KGO) -- A man accused of murder in Vallejo appears to have sought a marriage license with a woman charged in connection with the fatal shooting of a U.S. Border Patrol agent in ...

(KRON) — A Vallejo school has canceled classes “until further notice” after it was victim to a copper theft on Friday, according to a statement from Vallejo City Unified School District (VCUSD).

VALLEJO, Calif. (KGO) -- It's the middle of the school year and hundreds of kids in Vallejo are left wondering when they'll be able to go back to class. Over the weekend, their school's copper ...

NATO is testing its ability to rapidly deploy across eastern Europe — without direct U.S. assistance — as Washington shifts its approach toward European defense and the war in Ukraine. The six ...

(KRON) — A 22-year-old man arrested last week in Redding in connection to a fatal stabbing in Vallejo earlier this month may be connected to an unusual series of killings across the country.

Some of America’s most critical NATO allies have been shirking their financial obligations to the alliance, despite years of bipartisan calls for them to pay up — and top Trump administration ...