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Of about 30 kilometers the device attached to it sends back data including temperature humidity and air pressure. but the scientists are doing much more than just measuring weather conditions they're also studying climate change and how it affects the environment and the analyzing the interaction between the ocean and the atmosphere. how do the component parts of the earth's ecosystem work together and how are they being altered by global warming it's issues task but the research is here at spitzbergen are up to it. klara will try to estimate the total amount of micro algae in this part of the...

World's living space within which about 95% of our biodiversity lives and thrives. so there's a lot down there for us to explore and discover, and we just haven't had the opportunity to live on that frontier long enough to start really digging up those mysteries and being able to get that hugen/ocean connection. >> how far down will you be? >> well, we're at three atmospheres, which is pretty -- pretty reasonable. we can still breathe air. three atmospheres is 66 feet. where we'll be based, but it allows us as opposed to being baitsed on a ship, allows us to go scuba diving for 10, 12 hours at...

Work. that's one of the biggest problems in this search. the plane's transponder and the a car system that sends back data about the plane's health were apparently switched off. >> wouldn't surprise me that in the aftermath of this investigati investigation, a safety recommendation comes from the ntsb in this country, say you just have to put on a tracking system in every airliner that cannot be disabled. >> another piece of technology that could be due for an upgrade, flight data recorders. their batteries are only required to last 30 days and the signals they send have a range of only about ...

Suicide it means he would have had to overcome the other two guys, the co-pilot, or engineer, they were all working together on that. there is information there is a fanatic, we don't know. you have a territory several times the size of the united states. >> the transponder had to be turned off manually. two of them. so then it flew for hours afterwards and had these wild fluctuations in terms of the altitude. remember, the engines are sending back data as to how the engines are functioning. >> it was not the rolls royce that did it, the plane has the electronic signal. the plane went from 45,...

>> trying to figure out how long and how far this plane flew before it stopped responding completely. that could be incredibly obviously hard to determine. we want to go to cnn's jim clancy who is in kuala lumpur, malaysia. investigators have vastly widened where they're looking. how is this determined, do you know? >> this was determined by a satellite that reaches out and handshakes, looks for that aircraft, tries to plot where it's going to be, one time every hour. now, the acar system that sends back data from the plane about, you know, it's bearing, its airspeed, its s altitude, all those...