rehearsed in cyber space. i think law enforcement officials are looking at those pilots homes to understand their broader relationships, their e-mails, their computer files. reporter: what remains unanswered is what route the plane followed as it went west. to track the path, officials are now relying heavily on a technology that was never designed to locate an aircraft. the 777 has an antenna that automatically sends bursts of data. routinely that data is by design mechanical, like how much fuel the jet is burning, engine temperature, and engine performance. but a team of clever technicians realized the pings also reveal how far the plane was from the orbiting satellite. so if this balloon were the satellite and this string here was the signal bouncing to and from the plane, you can draw an arc here and see where it might have actually gone. it s not precise. and that s why the search area now includes 11 countries like
co-pilot have been searched by police. and cnn teams say they saw officials carrying out small bags from the copilot s house. but it s not clear now if they had those same bags when they went inside. let s put that in context. overnight malaysia said the investigation is once again focused on the crew members and the passengers as he suggested a hijacking is a possibility. he s now calling the flight s disappearance, quote, deliberate. the search area is focused on two quarters now. i want to show you the updated map here, as you can see it because it may be the first time you re seeing it today. this search is massively expansive. it goes as far north as kazakhstan and as far south as the southern indian ocean there. the search in the south china sea we know has been called off. investigators are also focusing on the signals that the plane kept sending to an orbiting satellite for hours after it lost radar contact.
earth s surface. you get a density change. can we put this together with global warming? sure. one of the things we try to do is understand the specific connections between the warming of the planet and the poles. release the heat from global warming there and it gets cycled through the atz sphere and the poles are like the canary in the coal mine. they melt first. we re seeing more surface melting where literally the top layer of the ice is forming a pond. in addition to just melting the ice and losing it, that lets more sun light through to the ocean and changes the basic part of the food web. your orbiting satellite, we re not just looking at the top of the world all the time. have you seen anywhere where the ice is expanding? there s been a couple of