BLITZER: Lisa Sylvester is monitoring some of the top stories in THE SITUATION ROOM right now. Lisa, what can you tell us about this asteroid that's headed towards earth?</s>SYLVESTER: Well, Wolf, in just five days, an asteroid that is the size of an aircraft carrier, it will be flying by planet earth that's going to get awfully close. Just how close? NASA says this asteroid will come within 201,000 miles of earth on Tuesday, which is actually closer than the orbit of the moon around us. Here's the asteroid's projected path. In that NASA graphic, the line that darts through the screen right there that is the path the asteroid is going to take. NASA says the asteroid poses no threat to earth, but if it did hit our planet, it could cause an impact the size of a 7.0 earthquake. You see the path there. And alarming new health warnings about a popular anti-smoking drug. A new study finds that Chantix increases suicidal behavior and depression in some patients. This is the latest in a long list of concerns about the medication, which was approved in 2006. The findings have been submitted to the FDA. The study's group says there needs to be stronger warnings about Chantix. And another major move toward a free market in Cuba. The communist government today announced that citizens and permanent residents will be able to buy and sell residential property on the island beginning November 10th. The new law instituted by President Raul Castro follows legislation in October legalizing the purchase and sell of cars so some changes there in Cuba, Wolf.</s>BLITZER: Slow but steady and maybe, let's see. Lisa, thank you.
Asteroid  Fly-By Next Tuesday; Study Links Chantix to Suicide