Did you know that the Presidio was founded in 1776 and is an active archeological site? Imagine how it may have looked nearly 250 years ago! To learn more, here’s a Science in the City video we made: อ่านเพิ่มเติม
Bring a magnet! We love to collect “black sand” or magnetic mineral magnetite at Ocean Beach. Drop a magnet inside your plastic cup & wave bottom of the cup just above sand to attract minerals. Demo: อ่านเพิ่มเติม
Try riding down on parchment paper! The less resistance your ride has on the slides, the faster you'll go. อ่านเพิ่มเติม
Did you know that San Francisco has last permanently operating, manually operated cable car system in the world? Check out our Science in the City video to learn more about SF's cable cars! อ่านเพิ่มเติม
Spot a wig! Sometimes it can take weeks to complete just one wig. Learn about the Wig Master of the world-renowned San Francisco Opera from our Driven: True Stories of Inspiration video series, here: อ่านเพิ่มเติม
This farm was once a freeway! Drop in Wednesday, Thursday, or Sunday, noon–5:00, to volunteer. Learn about how this little utopia evolved in this episode of “Driven: True Stories of Inspiration”: อ่านเพิ่มเติม
Did you know this rock wall is one side of a fault? Feel it! This smooth surface is called "slickensides." It was polished during eons of years of fault motion. Our video features this wall at 4:15. อ่านเพิ่มเติม
This is the only "off the grid" building in San Francisco! You can learn about this amazing place and the people who run it by watching this episode of ”Driven: True Stories of Inspiration”: อ่านเพิ่มเติม
Don't fight the current! For an easier swim, go out at low tide and return as the tide comes back in! Learn from the pros, a/k/a "The Old Goats," in this video from our Driven series: อ่านเพิ่มเติม
In movie theaters across the country, film projectors are being replaced by digital projectors. Have you watched a 35 mm film projection at SFMOMA yet? Projectionist Paul Clipson gives us a tour: อ่านเพิ่มเติม
"SF has more restaurants per capita than any other U.S. city, producing tasty meals—and thousands of gallons of used cooking oil. See how SF Greasecycle is turning this oil into fuel for MUNI buses: อ่านเพิ่มเติม
In this age of iPods and MP3s, vinyl records are still objects of curiosity and admiration. What's the difference between a 78 and a 45? What exactly is "cutting a record"? Find out from JRC owner: อ่านเพิ่มเติม
Beneath the 100-year-old piers, highly specialized divers are working to repair and restore the 1,200 concrete piles—sunk into the bay mud—that support the piers! Learn what they do: อ่านเพิ่มเติม
Dropping off your garbage, recycling, hazardous waste or oversized junk today? Take a trip behind the scenes of the San Leandro Waste Management facility in this episode of Science in the City! อ่านเพิ่มเติม
Did you know that Doyle Drive was built in 1933? Now too narrow for the amount of traffic and in need of a seismic upgrade, it’s being replaced by the new Presidio Parkway! We investigated: อ่านเพิ่มเติม
