clamoring for shelter. the mud slides have obliterated many villages. reportedly leaving more than 6,000 people without homes. authorities predicting more rain, which could trigger additional slides. brazil. >> shepard: zom ba groups opening carnival. audiences giving one of the participating teams a rousing welcome. the crew lost thousands of costumes and many floats in a warehouse fire last month. but thanks to the help of hundreds of people in their hometown, they were going strong today and that's a wrap on this fox trip around the world in 80 seconds. there is a whole lot of controversy over some hearings that your congress is set to hold this week about radical islam. and terror threats on u.s. soil. the critics are saying the whole thing is a big witch-hunt. the lawmaker in charge says it's an issue of national security. we'll get both sides so you can decide. plus, newly released footage of the attacks of 9/11.