Earth Rocks

Photo: JAY DIRECTO/AFP/Getty Images

Earth Day Lecture with Carter Emmart
Rose Center for Earth and Space; 4/21 at 6:30 p.m.; Central Park West at 81st St.
It’s part lecture, part awesome immersive experience at this event when the museum’s director of astrovisualization gives us laymen a look at our planet from an astronaut’s perspective, in the museum’s planetarium.

“Bag It” The Movie
92YTribeca; 4/21 at 7:30 p.m.; 200 Hudson St., nr. Canal St., 212-601-1000
A one-off screening of a documentary following Jeb Berrier, a regular dude who one day decides to stop using plastic bags at the grocery store, and it ends up changing his life. Oooh, drama!

Earth Day Flags and Flowers
Wave Hill; 4/22-4/24 at 10 a.m.-1 p.m.; W. 249th St., at Independence Ave; 718-549-3200
Paul Rudd’s already taught the kiddies that the earth is cool, and here they can get hands-on, when Brooklyn artist Miwa Koizumi leads a weekend of recycling-inspired art-making workshops.

EarthFair Outdoors Grand Central Terminal
Vanderbilt Avenue, btw. 42nd to 45th Sts., outsideGrand Central Terminal; 4/22 from noon-7 p.m. and 4/23 from 11 a.m.-4 p.m.; 42nd Street at Park Ave.
A Two-day street fair celebrating art, music, and the environment, with performances by jazzy The Flowdown and robotic hip hop crew Optimus Tribe. Kids get in on the action with interactive displays aimed to educate.

Broadway Recycled
Joe’s Pub; 4/25 at 7 p.m. and 9:30 p.m.; 425 Lafayette St., nr. Astor Pl.; 212-539-8777
Recycle takes on a different meaning when Broadway actors showcase songs that shoudla been on stage but were cut, with At Hand Theatre Company’s annual Earth Day concert. Getting a second chance are tunes from Hair, Side Show, Rent, Chicago, and more, with proceeds benefiting Broadway Green Alliance.

PolarBearCon Ride
Times Square; 4/23 at 2 p.m; Meet at 42nd St. and Broadway
If you’ve got a Polar bear costume lying around, this is your time to whip it out and join likeminded folks on a bike ride, showing your support for sustainable transportation. It might be cold enough that you’d want to wear it anyway, and if you don’t have a costume, they’ll have extra bear heads for you at the site. Just wear white, extra points if you’re fuzzy.

The Church of Earthalujah
Theatre 80; through 6/26, Sundays at 7:30 p.m.; 80 St Marks Place, nr. First Ave.; 212-388-0388
The good Reverend Billy and the 35-voice Stop Shopping Gospel Choir perform a piece of inspirational theater melding gospel with sermon and centered on anxiety related to climate change. Upcoming guests include Bertha Lewis (5/1) and Barbara Ehrenreich (5/ 8).

Wildlife Conservation Society: Run for the Wild
Bronx Zoo; 4/30 at 7 a.m.; Bronx River Pkwy. at Fordham Rd., at Crotona Pkwy.; 718-367-1010
Get outdoors for your Earth Day endeavors and run (or waddle) 5k for our friends at the Bronx zoo. Proceeds benefit everyone’s favorite flightless birds: the Argentinian penguins.

Earth Rocks