10 a.m. The Department of Education will host its annual Citywide High School Fair at Brooklyn Technical High School, 29 Fort Greene Place.
10 a.m. USO volunteers will prepare care packages for overseas troops at the launch of “Operation: Stuff the Square,” at the Military Island on Times Square, Broadway and Seventh Avenue.
11 a.m. Muslims will serve the homeless as part of annual Humanitarian Day at Masjid At-Taqwa, 1266 Bedford Avenue, in Brooklyn.
Noon. Sen. Ruben Diaz and Assemblyman Ruben Diaz, Jr. will join 4th annual African American Caribbean One National Bronx Day Parade starting at Boston Road and East 163rd Street in the Bronx.
Noon. Labor Mobile will visit Sunset Park at 48th Street and Fifth Avenue in Brooklyn.
Noon. Top college basketball coaches will conduct clinic for the kids of 9/11 victims at Baruch College, 55 East 24th Street at Lexington Avenue.
Noon. NYC Hispanic Heart Healthy Day celebration will take place in Queens Center Mall, 90-15 Queens Boulevard, in Elmhurst.
2 p.m. Geneticist J. Craig Venter, who mapped the human genome and now heads
a global effort to create “designer microbes,” will discuss global environmental and health problems at New York University's Cantor Film Center, 36 East 8th Street at University Place.
7 p.m. The Radical Homosexual Agenda will hold a rally protesting Speaker Christine Quinn's support of new parade permit rules at Washington Square Park.
8 a.m. The Brooklyn Fall 2007 Electronics Recycling and Clothing Donation Event will take place at Keyspan Park, Surf Avenue and 19th Street, in Coney Island, Brooklyn.
10 a.m. The Department of Education will continue its annual Citywide High School Fair at Brooklyn Technical High School, 29 Fort Greene Place.
11 a.m. ECOFEST, featuring the theme Sources of Energy Other Than Oil Exposition will exhibit alternative energy vehicles at Lincoln Center.
7 p.m. City of Water, a documentary produced by the Municipal Art Society and the Metropolitan Waterfront Alliance about the future of the New York City waterfront, will screen at Hunts Point Riverside Park at Lafayette and Edgewater Road.