so much here on the whole of the swiss army knife the swiss army knife and time it's cover yes exactly yes the techniques are some things are ok i. hate them so well i see something you must know his own is cameras basically we work very hard to finish and cameras. digital still camera one fork a camera here basically we are interested. so very soon. along we always call them along with the the from. the team expects to see a vertical wall of ice dropping five hundred meters from the surface but instead there's a surprise. they discover a huge underwater cavern been in this part of the glass in. the sea water is warmer than expected and this is unusual evidence of melt. really close to the ice and discovered that it was really water no ice everything was going to melt away with still going to a lot of. the rock that we were not expecting. especially not this. so far into the. warmer ocean currents and now flowing through the south towards antarctica. scientists believe the kind of melt we've seen here who contribute more than a meter to global sea level rise by the end of the century a

i mean there is so much here on the whole of the swiss army knife the swiss army knife and time discovered yes exactly this will take you through some things ok lights off a lot of cables so well i see something you must know his own is cameras basically we work very hard to finish and cameras. digital still one age to camera one fork a camera here basically we are interested in the eyes column so very soon will die along the eyes column along this the from the ratio. the team expects to see a vertical wall of ice dropping five hundred meters from the surface but instead there's a surprise. they discover a huge underwater cavern been in this part of the glass in. the sea water is warmer than expected and this is unusual evidence of now we were really close to the ice and discovered that it was really rotten ice everything was going to play out in a way we're still going to have a lot of holes in the eyes so yeah completely rotten we were not expecting that all the gracious and all that especially not at this depth of so far into the glacier. warmer ocean currents are now flowing through th

. >> so, where was the swiss army knife originally manufactured? in 1891, the swiss armyeeded a folding knife that could also open cans and disassemble a rifle. the fish scaler, ballpoint pen, and led light came later. >> a boy fascinated with battles of yore grows up to be an expert craftsman of deadly weapons. some he makes from scratch, like this battle axe. others, he buys for their historical value, like these world war ii navy knives. in 1986, 28-year-old robert marek is still living at his mother's house near san francisco. he doesn't know it, but his eccentric hobby has landed him on the radar of federal law enforcement. what happened? >> my mother answered the door, and there were two fbi agents there. and they told her they wanted to interview my brother, and she asked why. and they explained to her that they had done a profile on the unabomber. >> at the time still unidentified, "unabomber" was the fbi's code name for a domestic terrorist who sent mail bombs to his victims. he killed 3 people and injured 23 others. >> the unabomber had an association with uc be