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>> tremendously important for carbon draw down, takes in carbon dioxide. >> reporter: fight plankton jump start the cycle of life, feeding on the phyto plankton under the ice are zoo fish that feed all the way up the food chain, including us. >> its exciting. theres a lot there. a lot different than what weve seen so far actually, in terms of the diversity of things. >> reporter: initial data from hundreds of samples confirm the teams expectations, plankton, that critical source of ocean food co...

Changing, changing faster than the science and the studies can keep up with. the team drilled through the ice to measure thickness. >> were starting to get a fairly good idea. it has definitely thinned in this area as well, basically thinned everywhere. >> reporter: extracting ice that holds frozen clues. >> wow. look at this. beautiful. >> about a meter of ice core here. inside this piece of ice is a microscopic forest. >> reporter: greenpeace ship "the arctic sunrise" is converted into a float...

Together a puzzle. these pieces are constantly changing. changing faster than the science and the studies can keep up with. >> reporter: the team drove through the ice to measure thickness. >> were starting to get a pretty good idea. it has definitely thinned in this area as well. its basically thinned everywhere. >> reporter: extracting ice cores that hold frozen clues. >> beautiful. about a meter of ice core right here. and inside this piece of ice, is a little microscopic forest. >> reporter:...

Fighto plankton. >>s they are tremendously important for carbon drawdown, they photo synthesize and take in carbon dioxide. >> phyto plankton dont just store carbon dioxide, they jumpstart the cycle of life, and phyto plankton are zoo plankton which feed the small fish, feeding the bigger fish all the way up the food chain, including us. >> that is exciting. there is a lot. and this is very different from what weve seen so far, actually. in terms of just the diversity of things. >> initial data ...

To measure thickness. >> it has definitely thinned in this area as well. its basically thinned everywhere. >> extracting ice cores that hold frozen clues. >> wow, look at this. beautiful. thats about a meter of ice core here. inside is a microscopic foreign. >> greenpeace "arctic sunrise" is converted into a floating lab. all right. can grab the first one. >> reporter: melted ice core samples come to life. a kaleidoscope of algae and phytoplankt phytoplankton. >> theyre tremendously important fo...

Indicate the deaths of the woman and the couple are related. rosa flores, la romana, dominican republic. earlier i spoke with the president of an international investigative firm about the deaths of those three americans. he tells me incorrect crisisins >> the saints are there. >> will that be in the toxicology report? >> yes, all of that is done. tissue samples, blood samples, fluid samples from the liver, the brain, the heart, but all of the symptoms that have been complained about and the h...

But we would look at a potpourri of information. what their medical condition was. did they suffer from any chronic conditions. were they drinking heavily the evening before. what else may they have been exposed to. were they using illicit drugs themselves. what was it the cause of foul play? all of those things would have to play into it. but, the signs and symptoms of organo phosphate poisoning are there, and the answers are going to be in the post-more tem examination. the autopsy examination...

Keep banging out for you is that this race remains stable. look at this. so we take a look at where the poll -- our latest cnn poll showed and basically showed biden ahead 32, sanders 18. take a look at where it was back in october of 2018. you basically see the exact same picture. one and two are the same. three and four are the same. buttigieg is really the only one whos moved up because he was basically a no name. we didnt even ask him, but basically all the candidates are in the same place. ...

Really break down and actually see that nonwhite category in my mind is probably a little bit too broad. when we break it down to african-americans and hispanics, his span tipanics are voting si to whites but african-americans are powering that joe biden lead, about 40 points when you combine those two samples. thats a huge lead for him among african-americans. >> whats happening with michael bennett of colorado? >> i love that. michael bennett, by getting 1% overall in our cnn poll, bennett has...

Here is constantly changing the old people say that as well a small stream will grow larger and split up again its best not to interfere with you. to be the. many leading scientists also have reservations about the project environmental engineer. has spent years researching the amazon. he says the network of waterways here has shifted constantly for millions of years. weve got plenty of. people in favor of that. want the transport more say without more than. one. more there we never got down to....