Black Point Historic Gardens Restoration

Thursdays, 2–5 p.m. & Fridays 9 a.m.–noon, ongoing Meet: Top of main staircase behind the General’s Residence, Fort Mason Help to remove invasive species that have overwh... Read More

Science & Environment

A Royal Walk with the King Tide Along the Embarcadero

Friday, Feb. 9, 10:15–11:15 a.m. Meet: Pier 3 & 5 Join Exploratorium and Port of San Francisco staff on the waterfront to observe, photograph, and discuss the king tides. “... Read More

Science & Environment

71st Pacific Orchid Exposition: Timeless Orchids

Fri.–Sun., Feb. 16–18, 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

Cosmic Alchemy: How Neutron Star Smash-Ups Forge Heavy Atoms

By Mark Stefanos

Monday, Nov. 13, 7:30 p.m. Morrison Planetarium, Cal Academy of Sciences This talk will focus on recent advances in our understanding of the origin of the heaviest and rarest eleme... Read More

Science & Environment

NightLife: The Art of Nature

Thursday, Oct. 5, 6 p.m. California Academy of Sciences See what happens when art and nature collide at this NightLife honoring 10 years of “Big Picture,” the natural world pho... Read More

Science & Environment

Orionids Meteor Shower

Nightly, Oct. 21–22, 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

Europa: Exploring an Ocean World

Monday, Sept. 11, 7:30 p.m. Planetarium, California Academy of Sciences Join Dr. Samantha Trumbo and learn what lies beneath the ice of Jupiter’s frozen moon Europa and wheth... Read More

Science & Environment

Dr. Jane Goodall: Reasons for Hope

Friday, Sept. 15, 7:30 p.m. Golden Gate Theatre Enjoy an intimate evening with the world-renowned ethologist and activist who will take the stage, speaking about her work, her life... Read More

Science & Environment

Perseids Meteor Shower

Daily, through Aug. 24, midnight–dawn Peak: Fri.–Sun., Aug. 11–13 (predicted), midnight–dawn Northern night sky The waning crescent moon will make 2023 a good year for vie... Read More

Science & Environment

Andrew Fraknoi: Two Eclipses of the Sun

Monday, Aug. 28, 5:30 p.m. The Commonwealth Club & online Two solar eclipses are coming to North America — an annular (“ring of fire”) eclipse on Oct. 14 and a total ecli... Read More

Science & Environment

Plant Sale: Herbs and Medicinal Plants

Sat.–Sun., June 10–11, 10 a.m.–4 p.m. S.F. Botanical Garden (1199 Ninth Ave.) Curious about growing your own herbs and herbal medicine? Calendula or chamomile? knowledgeable ... Read More

Science & Environment

Charting the High Frontier of Space

Monday, June 12, 7:30 p.m. Planetarium, California Academy of Sciences Dr. Ed Lu proposes a four-dimensional map of asteroid distribution to help protect Earth from impacts. $15, ... Read More

Science & Environment

Birding the Hill

Friday, May 5, 8 a.m. Randall Museum (199 Museum Way) Join the museum’s resident birding guide for a Golden Gate Audubon Society–sponsored bird walk on Corona Hill. This mo... Read More

Science & Environment

S.F. Amateur Astronomers’ Star Party

Sunday, May 27, 6–10 p.m. Main Parade Lawn, the Presidio Join the S.F. Amateur Astronomers for public stargazing of the Moon, planets, globular clusters, and more. Dress warmly; ... Read More

Science & Environment

AI & Neurotechnology: Ethics & the Future

Thursday, April 6, 7:30 p.m. Sidney Goldstein Theater (275 Hayes St.) Former U.S. Attorney for the Southern District of New York, podcast host, and author Preet Bharara will talk t... Read More

Science & Environment