Friday, March 16

DC Environmental Film Festival: With its militaristic-sounding theme — “Stories From the Frontlines” — the 26th annual roundup of 100-plus eco-centric films makes it sound like the natural world is under attack, and maybe it is. Many of the messages of this year’s films, part of the largest environmentally themed festival in the world, are about those on the offensive in the fight against such problems as rising sea levels (“Anote’s Ark,” Friday at 7 p.m. at National Geographic) and food waste (“Wasted! The Story of Food Waste,” Saturday at 7 p.m. at the Carnegie Institution for Science). Through March 25. Prices vary. Some screenings are free.

Innovative Lives: How Women Shaped the Alcohol Industry at the National Museum of American History: Women have been at the forefront of the alcohol industry for centuries, as both brewers and distillers. Learn about this history at a panel discussion featuring Stoudt's Brewing founder Carol Stoudt, Emily Bruno and Julie Verratti of Denizens Brewing, and Meredith Grelli of Pennsylvania's Wigle Whiskey. The post-talk reception includes beers from the two breweries, a Wigle tasting and cocktail, and themed appetizers. 6:30 to 9 p.m. $40.

In the Beginning: A 'Wild Style' Dance Party at the Kennedy Center: The Kennedy Center’s 35th-anniversary screening of “Wild Style,” the first film to examine hip-hop’s early years in New York, is sold out. But there are other opportunities to enjoy hip-hop at the Kennedy Center this weekend: A “Wild Style” dance party after the movie, in the arts center’s Atrium, features sets by Grand Wizard Theodore, the DJ credited with inventing scratching technique, and Grandmaster Caz of the Cold Crush Brothers. 9 p.m. Free.

'Sights and Sounds of Ireland Today' at Dupont Underground: Irish arts organization Solas Nua — Irish for “New Light” — has organized “Sights and Sounds of Ireland Today,” an exhibition of contemporary video works by 21 Irish artists in the former trolley tunnels under Dupont Circle. Friday’s opening-night reception features a conversation with curator Jackie Hoysted, Andy Johnson of the Corcoran School of Art and Design, and artist Jonah King, whose work is featured in the show. 7 p.m. $10.

Moombahton Massive at U Street Music Hall: What would U Street Music Hall's annual anniversary celebrations be without D.C.-to-L.A. duo Nadastrom headlining a rager? You'll feel the bass pummeling your bones and gut as the loping grooves, which fuse house and reggaeton, compel the rest of your body to move. You can blast moombahton music in your car, but it's best experienced in the middle of a crowded dance floor. SpydaT.E.K. and Gingee join Nadastrom on the bill. 10 p.m. $12 in advance, $15 at the door.

Saturday, March 17

National Cherry Blossom Festival Opening Day: Earlier this month, the National Park Service predicted that peak bloom of the cherry blossoms — when at least 70 percent of the pink flowers around the Tidal Blossom are blooming — would be March 17-20. The festival was scheduled to begin March 20, so organizers moved the start back four days to allow visitors to enjoy the most colorful weekend of the year. That decision now looks hasty — the Capital Weather Gang is now predicting that the peak will be at the end of the month, and maybe into April — but it will allow visitors to celebrate the season at the Tidal Basin this weekend, even if the trees aren’t cooperating. Rangers will be on duty and hosting informational programs at 1 and 3 p.m. daily. Live entertainment runs from noon to 6 p.m., and includes big band, blues and rock groups, and Indian, Mexican and hip-hop dance performances. Families can check out arts and crafts stations and special activities both days. Saturday and Sunday from 10 a.m. to 6 p.m. Free.

St. Patrick's Day at the Guinness Open Gate Brewery: Guinness has become the default adult beverage on St. Patrick's Day, so why not spend the 17th drinking a Guinness at the brewery? You don't even need a last-minute plane ticket to Dublin: The five-month-old Guinness Open Gate Brewery, located in Halethorpe, Md., is the Irish beer giant's first American brewery since the 1950s. While the flagship Guinness Stout and its sister brands, such Foreign Extra Stout and Harp Lager, are still produced in Dublin, St. Patrick’s Day sees the debut of a brand-new Maryland-made stout, created in conjunction with Guinness's Irish brewing team. Other exclusive house beers, made on this side of the Atlantic, will also be available for sampling. Proceeds from tickets, which allow entry for a two-hour window, will be donated to a local charity. 11 a.m. to 8:30 p.m. $5. Beers priced individually.

Free Lyft Rides Home: Drunk driving spikes around holiday weekends, which is why the Washington Regional Alcohol Program offers its SoberRide program on St. Patrick's Day. Between 4 p.m. Saturday and 4 a.m. Sunday, the group offers a free $15 Lyft credit to encourage ride sharing. The code will be posted on the SoberRide website at 2 p.m. Saturday.

D.C. Reynolds Anniversary Party: DC Reynolds turns six on St. Patrick's Day, and the popular Park View bar is celebrating by extending its Buy One, Get One happy hour for a whopping six hours. Between 3 and 9 p.m., purchase any drink in the house — a local craft beer, a shot of Kentucky whiskey, a vodka-tonic — and you'll receive a second one free. There are rules, of course: A couple can't come in, order one drink and get the second “free” drink right away. But this is an excellent reason to round up friends and grab a table on Reynolds' expansive rear patio. 3 to 9 p.m. Free; drinks priced individually.

Shabazz Palaces at the Millennium Stage: A weekend of hip-hop at the Kennedy Center moves onto the Millennium Stage on Saturday. Shabazz Palaces, the eccentric duo featuring Ishmael Butler of Digable Planets and instrumentalist Tendai “Baba” Maraire, melds hip-hop, reggae and funk into complex and intricate soundscapes. 6 p.m. Free.

Sunday, March 18

Maker Faire NoVa at George Mason University: If you want to learn how to make an array of things, from a robot to a scarf, there’s Maker Faire NoVa, a hands-on event at George Mason University. It’s an offshoot of the Bay Area’s Maker Faire, which is summed up as part science fair, part county fair, part something entirely new. The family-friendly Northern Virginia event will bring together crafters, engineers, woodworkers, tech fans, mechanics and more makers of all ages to show off the stuff they’ve created — and learn something, too. 11 a.m. to 5 p.m. $2-$15.

Justin Timberlake at Capital One Arena: Justin Timberlake’s first self-reinvention from boyband heartthrob to solo pop star has served him well for more than a decade. This year, though, Timberlake decided to write a more rural chapter of his life that would ostensibly trade Hollywood glitz for his humble Tennessean beginnings. The result was the album “Man of the Woods.” Described by Timberlake as “Americana with 808s,” the fusion of arena pop and funk with down-home lyrics got lukewarm reviews. The exclamation point on his transition was his hyped (and some say disappointing) appearance at the Super Bowl, which ultimately helped him land the No. 1 spot on the Billboard 200. Timberlake is nothing if not a well-oiled machine of infinite star power — no matter what output it’s set on. 7:30 p.m. $160-$344.

— Fritz Hahn, Adele Chapin, Michael O'Sullivan and Briana Younger

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