be on the world economy? ash now stretches 30,000 feet in the air and british authorities say air space will remain restricted till tomorrow and now word that british airways plan to test a 747 over british and irish air space. this comes after the danish airline klm flew a 737 through the ash with no problem and others below it. laura, the question a lot of people want to know. >> absolutely. there is a lot of work being done by many airlines to try to figure out how to get these stranded passengers in the air and back home. test flights are being conducted across europe. some airports are reopening in anticipation that travelers will be able to get on flights as soon as possible. we have another visual to show you as to why the situation continues to be so serious. look at this picture on the front page of the new york post today. this amazing shot taken by an