Most anticipated comet of the year makes closest approach to Earth this weekend

Comet Tsuchinshan-Atlas made its closest pass to Earth this weekend, but weather permitting, it should be visible to the naked eye until the end of October. Here's what to know.

Fleet Week airshow cut short, Blue Angels canceled

The iconic Blue Angels scheduled to grace the San Francisco and Bay Area skies has been canceled for Saturday.

Caught on camera: Lightning bolt blasts bald eagle from tree

It's like something out of a movie: Video shows two birds perched on a dying cottonwood tree in Colorado. Suddenly, the nest explodes and both birds are knocked unconscious.

Stunning images of northern lights dazzle California

It's not too often the skies are awash in pink and purple. But that's what happened on Thursday when northern lights soared over the Earth, sending stunning views into Germany, New York City and Tahoe.

Northern Lights visible in the Bay Area just north of Napa

It was a "total light show" in the North Bay on Thursday evening. A KTVU photographer captured an astronomical phenomenon known as a geomagnetic storm. The intense aurora produced by the storm is more commonly referred to as the Northern Lights.

Coyote involved in deadly Crissy Field dog attacks put down

The coyote behind the killings of several dogs at a San Francisco park was killed by wildlife professionals, according to park officials.

Fat Bear Week 2024: Grazer takes the crown after confronting her cub’s killer

In an emotional turn of events, Grazer won the 2024 Fat Bear Week contest, defeating Chunk, the bear that killed her cub earlier this summer. Fans from around the world cast over 40,000 votes in this Alaskan wildlife competition.

Sea lion dies from gunshot wound in Orange County

A rescue organization tried to nurse the sea lion back to health but it died the next day, officials said. A bullet was recovered from its carcass.

Invasive 25-pound rodent spreads in Bay Area, posing health and infrastructure threat

A disturbingly large, invasive rodent, double the weight of a cat, is causing widespread concern in the Bay Area, threatening infrastructure, the state’s water supply and posing a health risk to humans, pets, and livestock.

Northern lights alert: Will the Bay Area be treated to a celestial show?

Strong geomagnetic storms are forecasted in the coming days, and that could bring spectacular northern lights displays to parts of the U.S.

Mount Everest, the world's tallest mountain, is still growing — here’s why

Mount Everest is growing taller every year, and new research suggests that the merger of two rivers thousands of years ago plays a key role in its rise.

Dolphins smile at each other while playing, study says

Dolphins are actually smiling at each other when they open their mouths while playing with one another, according to a recent study out of Italy.  

Fat Bear Week starts a day late after bear kills rival on live webcam

Fat Bear Week is back, but the annual contest that celebrates brown bears and their healthy appetites was delayed after a bear killed another bear on a live webcam.

Scuba divers have 'once-in-a-lifetime' close encounter with great white shark near Catalina

Scuba divers near Catalina had a rare and thrilling encounter with a 15-foot Great White Shark, capturing the moment on video as the shark calmly circled them before swimming away.

Watch: 'Comet of a century' puts on beautiful show while zooming by Earth

Astronomers said Comet Tsuchinshan-ATLAS reached perihelion, its closest point to the Sun, on Sept. 27 and will spin back around for another visit to Earth's neighborhood. On or before Oct. 12 will be the next chance to see the celestial show.