Experts and advo123bcates who work with survivors.

Another big question remains: Even if you know youre under attack.Listen cl123bosely: Some hear multiple.

two seconds -- with some sustained periods of several minutes or more.which measures a signals frequency and amplitude.Cuban officials did not respond to requests for comment for this story but have complained in the past that Washington refuses to share information they say they need to fully investigate.123b

the sounds wouldnt show up on a recording.Then there would be silence for a second.

Embassy to teach them what to listen for.

Some embassy employees have also been given recording devices to turn on if they hear the sounds.But you realize that he didnt just love objects; he understands how human movements reflect the emotions of the mind

CBS News Florence was very tolerant of a guy like Leonardo.I think that Vitruvian Man -- the guy in the circle and the square spread eagle -- I think its partly a self-portrait.

Now so valuable that when curators at New Yorks Metropolitan Museum agreed to give us a peek.Its a study for many paintings he would do later.