at columbia university in new york, ryan, you studied the region. give us a quick sense of what the searchers are up against right now. >> well, we are heading into the southern hemisphere winter. they can expect huge swells, big storms, and moreover, they can expect really strong anti-arctic polar current, that major current system in the region to spread the debris around really fast. >> so if the satellite image spotted 122 pieces of something on sunday, and now it is wednesday, flights went out earlier today, didn't see anything, how difficult is it to find the location, given the currents, given the mobility of what's going on over there? >> just the back of the envelope calculation says the debris can move 20 or 30 miles around per day. so just because they saw it in one location yesterday doesn't mean it is going to be there today. and you know, certainly it is