swim under, kind of like the old movies, where we'd see you pop up, and you'll be in the air and aquariusll around this, what, bus-sized thing, right? >> right. it's about 40 feet long, 9 feet wide, inside full of equipment and full of people, six people. you can get in and out "the habitat" from down below in what we call the moon pool. but inside, it's air, it's at pressure depth, so to speak, so we'll be saturation diving, as opposed to diving from the surface. and once we're we're down there, we are committed to being down there for the full 31 days before coming back up. >> all right, chad and fabien, thank you. to follow fabien cousteau's underwater adventure, go to mission31.com. and be sure to come back and see us next week for our new segment, "the science behind." >>> nearly two dozen u.s. embassies and consulates closed down and select u.s. military forces are on high alert. just ahead, we are live from five countries on the al qaeda terror threat. hi, hi, i'm sherri. and i'm going to show sherri how collecting box tops for education earns cash for our school by shopping at wal