Spotted owls are one of the most iconic threatened species in the West. But despite two decades of work to bring them back, their numbers are still declining. That may be due in part to a new threat - not from humans, but from other owls.

Spotted owls are one of the most iconic threatened species in the West. But their numbers are still declining that may be due in part to a new threat, not from humans, but from other owls.

Following a 71-hour closure of the roads connecting the Golden Gate Bridge with the Marina District, the Presidio Parkway opened to traffic Sunday night and will soon be transformed into the city’s newest parklands by the designers who created New York City’s elevated High Line park.

Responding to news of stimulus money tabbed for Golden Gate National Parks, KTVU visits Dias Ridge in the Marin Headlands???site of future trail and habitat work. The segment includes on-site interviews with Sharon Farrell of the Parks Conservancy and Steve Griswold with the National Park Service.

KTVU News covers the Muir Woods Centennial celebration with a closer look at the William Kent story and his legacy of philanthropy and conservation. The segment features interviews with Kent's grandchildren.

The Alcatraz exhibition, opening Sept. 27, will feature sculptures, sound installations and other mixed-media work scattered among various locations on the Northern California island.

Ai's Alcatraz show is a joint project of the National Park Service and the Golden Gate National Parks Conservancy, which oversee the penitentiary-turned-park, and the San Francisco-based For-Site Foundation, a nonprofit that commissions artwork in public places.

From NightLife at the Academy to free walking tours to Japantown and beyond, 49 spots in San Francisco that are new, newly transformed or underappreciated. Time to explore!

This week, park-loving San Franciscans should be turning out in force when the board of the Presidio Trust meets to hear public comments on the three development proposals in play for Crissy Field.

The busiest unit in our national park system isn't a park at all. In fact, plenty of visitors never notice that they're in it — not when they're half-lost in the redwoods of Marin County's Muir Woods, not when they're deep into a conversation about robots at San Francisco's Ft. Mason, not when they're roaming the vast beach flats of Ft. Funston, near the San Mateo County line.