Having a new baby is like going underground. Limited communication with the outside world. Lack of direct sunlight. The ability to go days without showering and barely notice the scent.But Lincoln Park’s Galt Baby store will force you out of hiding. The mini empire’s third location (following Michigan Avenue and Northbrook) is a new parent emporium stocked with modern baby gear. There are twenty-plus stroller brands, from a Maclaren umbrella ($130) to a Silvercross pram ($4,000), to test-drive on a walk around the block. Choose from ten brands of car seats, including Britax and Recaro ($100-$399), ready to be installed by an in-house certified car seat installer.Aisles are packed with developmental playthings (starting at $4) like Wee Gallery flash cards and Kid O puzzles. An onsite service center tops things off; stroller repairs and tune-ups are free if you’ve purchased from Galt, otherwise nominal charges apply.And though the furniture and bedding selection is still filling in (goods by DwellStudio and Oeuf just arrived), you can find necessities like Medela breast pumps ready to go.The only thing missing? Clothing, but we trust you already have enough to go around.Galt Baby, 1915 North Clybourn Avenue, at Kenmore Avenue (773-327-9980 or galtbaby.com).SEEWhat’s on Your Plate?What: You loved Food, Inc. Now check out this doc following two city kids on a quest to discover how food travels from the harvest to their lunchroom.Why: Healthy food advocates and farmers lead a discussion after the screening. Plus, a dinner on Sun. before the show.When: Sat., free screening, 6 p.m.; Sun., dinner ($30 for adults, $15 for kids), 3 p.m., screening, 4 p.m.Where: Sat., Menomonee Club for Boys and Girls, 1535 N. Dayton St., at Blackhawk St. (312-664-4631); Sun., Uncommon Ground, 1401 W. Devon Ave., at Glenwood Ave. For a reservation (required for Sun.), call 773-465-9801.SHOPNat & Helens First Anniversary PartyWhat: The Lakeview gem celebrates with raffles and baby food samples from Square One Organics.Why: They’re donating 10 percent of your purchases to forestry nonprofit Trees for the Future and other charities.When: Sat., 11 a.m.-6 p.m. (Square One samples, 11 a.m.-3 p.m.)Where: 3125 N. Broadway St., at Briar Pl. (773-525-4030).POSEMother’s Day Photo ShootWhat: Shutterbug Michele Wayman does quickie sittings of up to twenty candid photos of your little superstar. An eight-by-ten photo and contact sheet (for future orders) is available on May 3.Why: It has Grandma written all over it.When: Sat., 11 a.m.-3 p.m.Where: Sacred Art, 4619 N. Lincoln Ave., at Wilson Ave. Reservations (required) at 773-728-2803. Sittings, $50.