coming to you live from hong kong as leader invokes emergency powers for the 1st time in more than 15 gatti long vans face masks saying it's necessary to prevent violence during anti-government protests and the chinese room . correspondent for the latest coming up a rising number of refugees arriving in greece to tell her report from inside europe's biggest refugee camp for children.

location volcanologists have hardly been able to carry out any research into time for at all now gattis are is using rock samples from the different layers to reconstruct the volcanoes history. he can read the deposits like a book. on important funded samples from the 815 deposits teach us a lot about the processes within the volcano before it erupted water for example by analyzing the samples we can determine how far below the surface of the magma chamber was and where the magma laws and how long it had been of that before the eruption long enough mark we can also use an array of analytical methods to work out the magmas gas content and how much self us gas was released during the eruption. pushed him and the fear srinagar some movie and i have to in 5 years have stored. the song for formed tiny droplets so called aerosols in the stratosphere and they reflected much of the sun's energy back into space and dispersed or absorbed the rest. that meant much less heat reach the earth's surface and temperatures dropped. and it took several years for the particles to sink back down to the grou

geologist browser gattis from kiel university in the united kingdom is surveying the area around the volcano. born in 5 work he has been working on tom bora for years and is one of few experts to carry out field research there. he's trying to reconstruct the exact course and extent of the eruption. it isn't coming from i use this range finder to measure the height of the war with iran and what was formed by deposits left by the pirate plastic flow from the tambura eruption in 915 we've got about 9 meters of deposits here. the vast amount of material comes from the mountain that was once over 4000 meters high. but the volcano had been dormant for centuries before it suddenly awakening and 815. at the time nobody had any inkling that tambura would wipe out some population in a matter of days. 200 years later archaeologists are searching for traces of the people who once lived here through many archaeologists call it the pompei of the east because like the ancient roman city the settlements around the volcano were suddenly buried by an avalanche of hot ash . if. 3. so far just 4 buildin

. >> they were going to hire trey gatty, former congressman. but that fell apart over the weekend as well. thank you, guys, very much. for more on the legal implications of all of this for the president and for rudy giuliani, i'm joined by nbc legal analyst. she's also a former assistant u.s. attorney in the southern district of new york. also the same office rudy giuliani used to head. so this news that the scny is looking into what rudy giuliani was look overseas in ukraine, explain what they're doing. also, very weird since giuliani used to run the office. >> it is unusual. but, you know, more credit to them for doing that and in many ways, i think that they're looking at giuliani, who used to be former u.s. attorney. you know, and saying what are you doing? right? it makes it all the more sort of shocking and incredulous that he might have committed crimes like this. and that he's hiding behind this veil of being the president's lawyer. i mean, i almost wish we could stop calling him that because none of this stuff that he's doing with resp