NASA announces the 10 finalists for its "teacher-in-space" competition at a 10 a.m. news conference in the sixth-floor auditorium of its headquarters at 400 Maryland Ave. SW. The National Conservative Foundation and the National Conservative Political Action Committee hold an 11 a.m. news conference to announce a $250,000 ad campaign to "spotlight liberal bias in the national media." The briefing will be held in the West Room of the National Press Club. The Bureau of National Affairs releases a report on the status of the National Labor Relations Board at 10 a.m. at its offices, 1231 25th St. NW. The National Clean Air Fund holds a news conference on new Environmental Protection Agency maps identifying areas that are more vulnerable to acid rain than previously reported. The briefing will be at 11 a.m. at 1701 18th St. NW. TUESDAY

The Equal Employment Opportunity Commission marks its 20th anniversary. The Leadership Conference on Civil Rights and the National Coalition on Women and Girls in Education hold a "Speak Out for Civil Rights" rally on Capitol Hill. THURSDAY

Independence Day observed. FRIDAY

The Full Employment Action Council holds a briefing on its study, "Economic Recovery: Doing a Poor Job for the Jobless Poor," at 11 a.m. in Room 430 of the Dirksen Senate Office Building.