53rd Anniversary Earth Day San Francisco

Saturday, April 22, 11 a.m.–6 p.m. County Fair Bldg., Golden Gate Park (1199 Ninth Ave.) Celebrate Mother Earth at this festival that will feature speakers and exhibitors focusin... Read More

Science & Environment

36th Annual Pi Day

Tuesday, March 14, 11 a.m.–3 p.m. Exploratorium Enjoy pi-themed activities to honor the never-ending number 3.14159 … including a Pi Procession (1:59 p.m.) with live music ... Read More

Science & Environment

City Public Star Party

Sunday, March 26, 8–10:30 p.m. Parade Grounds, the Presidio Join the S.F. Amateur Astronomers for free public stargazing of the Moon, planets, globular clusters, and more. Dress ... Read More

Science & Environment

Magnolia Curator Tours

Thursday & Saturday, Feb. 2–25, 10 a.m. & noon S.F. Botanical Garden (1199 Ninth Ave.) The garden is recognized as the world’s fourth most significant collection of mag... Read More

Science & Environment

70th Pacific Orchid Exposition: Celebrating Diversity

Fri.–Sun., Feb. 24–26, 10 a.m. S.F. County Fair Bldg. (1199 Ninth Ave.) The largest orchid show on the West Coast features thousands of blooms, and offers a diverse variety of ... Read More

Science & Environment

Black Point Historic Gardens Restoration

Thursdays, 2–5 p.m. & Fridays 9 a.m.–noon, ongoing Meet: large tunnel, Sea Scout Dock, 3500 Van Ness Ave. Help to remove invasive species that have overwhelmed the site and... Read More

Science & Environment

James Webb Space Telescope: NASA’s Greatest Observatory and Its Great Science

Monday, Nov. 7, 7:30 p.m. Morrison Planetarium, Cal Academy of Sciences Dr. James Greene from NASA’s Ames Research Center will discuss the mission of the JWST space observatory l... Read More

Science & Environment

Monarch Meetup

Tuesday, Nov. 15, 4–5:30 p.m. Parking lot (East at Down Road Trail), Fort Baker Learn about community science efforts that document the western monarch butterfly migration each f... Read More

Science & Environment

NightLife: Flocktoberfest

Thursday, Oct. 6, 6 p.m. California Academy of Sciences Bird is the word! Flock over to NightLife for flights of beers and birds in honor of this Oktoberfest tradition. Ages 21 &am... Read More

Science & Environment

Orionids Meteor Shower

Nightly, Oct. 20–21, midnight–dawn Eastern night sky The Orionids are named after one of the most recognizable constellations in the sky, Orion, from which these meteors appear... Read More

Science & Environment

Astronomers for Planet Earth: A Cosmological View on Climate

Monday, Sept. 12, 7:30 p.m. Planetarium, California Academy of Sciences Learn how the astronomical perspective is valuable in the struggle to preserve our planet’s habitability. ... Read More

Science & Environment

Alcatraz Historic Gardens Restoration

Wednesday & Thursday, ongoing, 8 a.m.–noon Alcatraz Gardens Help restore and maintain gardens once tended by the island’s military and penitentiary residents — add life, ... Read More

Science & Environment

Perseids Meteor Shower

Rise: Daily, Aug. 1–11, midnight–dawn Peak: Thu.–Sat., Aug. 11–13, midnight–dawn Northern night sky Although there will be no moon-free viewing this year at the shower�... Read More

Science & Environment

Cool: Women Leaders Reversing Global Warming

Friday, Aug. 5, 5:30 p.m. The Commonwealth Club & online Join Paola Gianturco and her 12-year-old granddaughter Avery Sangster who interviewed and photographed women politician... Read More

Science & Environment

Beginning Beekeeping: The Basics and Mid-Season Colony Health

Saturday, May 21, 10 a.m.–noon Garden for the Environment (1590 Seventh Ave.) Learn bee basics, their progress through spring and summer, and what to expect as colonies expand in... Read More

Science & Environment