A 1700-square-meter map showing the spread of AIDS throughout the world was displayed in The Hague, Netherlands.

At the Brattle Theater in Cambridge, the Boston Living Center will host a screening of "3 Needles," a film about the AIDS crisis set in China, Africa, and Montreal, tonight at 7:30 p.m. and tomorrow at 2:30, 5, and 7:30 p.m. in honor of World AIDS Day.