If the daring exploits of Nellie Bly fascinate you, you can learn more about brave, adventuresome and truth-seeking journalists at the Newseum, the Washington museum dedicated to the news. It's a fun place to see that day's newspapers from all over the country and the world. You also can play interactive video games about journalism ethics and make your own 'news' video. But if you want to know more about the conditions Nellie Bly encountered, don't miss 'I-Witness: A 4-D Time Travel Adventure.' The movie, which is included in the price of museum admission, introduces you to great reporters, including Edward R. Murrow covering World War II and Bly going undercover in that insane asylum. ( The special effects are awesome; just try not to squeal when you sense the mouse scurrying past your feet!) The museum and the film are best for kids ages 10 and older. The Newseum is at 555 Pennsylvania Ave. NW. It's open from 9 a.m. to 5 p.m. Admission to the museum is $20 for adults, $13 for kids ages 7-13 (kids younger than 7 are free). The museum's Web site is www.newseum.org, or you can call 888-NEWSEUM. 