Sanden Totten

Earthquake early warnings: Rift forms in public, private efforts.

Roughly 100 travel agents work as "accredited space agents" to sell seats for Virgin Galactic.

To help fight wildfires, officials often dump orange fire retardant from planes. But some Forest Service employees argue the substance doesn't work as promised.

The citrus disease known as “Huanlongbing” has been raging for seven years, killing millions of orange and grapefruit trees across Florida. Now it’s been detected in California.

The books are best sellers, and the movie is on track to blow out the box office. But lining up marketing partners is a bigger challenge.

A mega-boulder is making its way to the Los Angeles County Museum of Art, where it will be part of a permanent installation. It's one very pricey trip.