One day just isn’t enough. Join us in a celebration of our planet all April long—at the Academy, online, and in your community. From pay-what-you-can admission on Academy Day on April 4 to local bioblitzes during City Nature Challenge on April 26-29, this page is your home base for exploring your home planet.
City Nature Challenge
![Child in purple rain boots stands next to a Northern California tidepool with anemones and starfish](https://www.calacademy.org/sites/default/files/styles/manual_crop_square_460px/public/assets/images/programs/commsci_tidepool-girl-in-purple-boots_mg_5093finaledit.jpg?itok=I-fWVkpg&c=bb12b74aab4e7f27fb5e1412d5ac2bc9)
Join our annual global community science event to find, document, and share urban biodiversity!
Academy Day
![A docent shows scientific specimens to young guests during Academy Day 2023](https://www.calacademy.org/sites/default/files/styles/manual_crop_square_460px/public/assets/images/development/dev_3360x2240_academy-day-docent-demo-kids_mg_4543_nr_cas_230404.jpg?itok=oqGLireI&c=3519b302bc62345998c0797486198890)
Join us for a celebration of our anniversary every April 4, featuring a science fair, animal programs, and more.
Earth to NightLife
![Earth to NightLife](https://www.calacademy.org/sites/default/files/styles/manual_crop_square_460px/public/assets/nightlife_earth_eventgraphic_1200x900.jpg?itok=N6FLdwzJ&c=0b672f4fc775307c939e67b7b954d5bd)
Attention Earthlings: our planet's calling & it's time to answer. Join us for a night of community & activism.
At the Academy
Spring in the Garden
![Toddler plays at Riveropolis water activity at Spring in the Garden at the Academy](https://www.calacademy.org/sites/default/files/styles/manual_crop_square_460px/public/assets/images/exhibits/spring-in-the-garden_3396x2196_toddler-riveropolis-closeup-dsc09763_nr_cas_240308.jpg?itok=yytcKBDW&c=5531dd830104e93622a1eb5a32cd02b5)
Bring your wild things to the Academy for Riveropolis, Bugtopia, and other hands-on programs. March 9-April 28.
A Solar Eclipse Across America
![](https://www.calacademy.org/sites/default/files/styles/automatic_square_460px/public/youtube/z6rR3eIObpQ.png?itok=UHiBwt60)
Everything you need to know about watching the solar eclipse on April 8, 2024, at the Academy or at home.
Youth Action for the Planet
![Leadership Design Council group photo](https://www.calacademy.org/sites/default/files/styles/manual_crop_square_460px/public/assets/yap_groupphoto_fy24.jpg?itok=ZTOvd6re&c=0b672f4fc775307c939e67b7b954d5bd)
We're growing a global youth movement to regenerate the natural world. Join our Earth Day pop-up on April 21!
Big Bang: Party After Dark
![Image of Party After Dark poster](https://www.calacademy.org/sites/default/files/styles/manual_crop_square_460px/public/assets/images/development/pad24_webheader.jpg?itok=s-9gVYO5&c=c417e56e8cd7aed777dc01e7ee821ee4)
Party with a purpose at the Bay Area's best afterparty of the year. April 18, 2024; 21+. Tickets on sale now!
Wherever you are
Resilience & Regeneration
![Banner image for Resilience and Regeneration member talk at the Academy](https://www.calacademy.org/sites/default/files/styles/manual_crop_square_460px/public/assets/images/events/dev_resilience_and_regeneration-web_inline-1200x1200_240403.jpg?itok=b6y3awJI&c=8c73bf5a6d6b2a6bdd5817f6732138c4)
Donor event: Hear about recent Great Barrier Reef dives and solutions for regenerating coral reefs globally.
NightSchool
![aBright blue bioluminescent organisms swirl in a wavy pattern behind a white NightSchool logo.](https://www.calacademy.org/sites/default/files/styles/manual_crop_square_460px/public/assets/images/events/nightschool_1260x900_wordmark-hero_230614.png?itok=A96V7GVg&c=5f70fb276c457a0682e6982256895a70)
NightSchool is currently paused, but you can press play on 94 (!) recorded livestreams on our YouTube playlist.
SF Climate Week
![Fog-shrouded Golden Gate Bridge. Photo by Leo Visions](https://www.calacademy.org/sites/default/files/styles/manual_crop_square_460px/public/assets/images/events/earth-month_golden-gate-bridge-sf-climate-week-hero-leo_visions-93tzuypvtyg-unsplash_240314.jpg?itok=p_XSRD-L&c=f629e9724bd04a3a42fe8a226ebdd3f3)
April 21-27: Explore local and global solutions to the climate crisis. Program details coming soon!
Celebrating Ecosystems: Earth Day 2024
![Illustration of planet Earth against white background](https://www.calacademy.org/sites/default/files/styles/manual_crop_square_460px/public/assets/images/misc/adobestock_planet-earth-drop-shadow-35259829.jpeg?itok=Iv-lVBjy&c=c8a669f1d5671440ff041dea033bf7b1)
Tune in to a free livestream designed for grades 4-6 about Northern California's ecosystems. April 22, 10 am.