. >> marin headlands became a giant classroom today for bucky kids who got to work with a "national geographic" photographer he dropped this cube into all sorts of places from central park to costa reeka. today near rodeo beach working with students from nay you're bridge. >> the idea is take a look at the world around use there could be thousands of creatures. in this pound to create a how do video for "national geographic". >> what a great experience. >> i'd like to try that myself. >> all right. that is going to do it for us. world news is coming up next i'm cheryl jennings. >> thanks for watching we appreciate your time as always from jand patel ask all of us here, we'll see you again at 6:00. >>> this is "world news." tonight, on alert. north korea still poised to launch a missile test. today the president speaks out as a new report says the north may have even greater capability -- nuclear capability than we thought. >>> april madness. hundreds of severe weather warnings as we see this giant tornado bearing down. >>> refund racket. a big alert about your family's tax return. we're with a

the case in 2007, they had a guy named bucky phillips in upstate new york. he alluded thousands of law enforcement auchlsofficer s for and weeks. we hope we're going to find this guy. but it's very likely that either he found a way to get out or he's found some place that the police just haven't been able to find yet. and so it's going to take a very methodical and very tension-filled search that's going on right now. >> so, michael, is there not a critical time frame in which, you know, for the first x number of hours it is more likely that you'll apprehend somebody and as time goes on it is less likely? >> it really depends on the geography you're looking for. obviously woods versus an urban setting versus a suburban setting. a lot of nooks and crannies in houses. perhaps concealment opportunities. and it just takes a long time. but here's -- here's the point we should watch. at a eacertain point in time, f the commander at the scene, when do you say, all right, let's expand the search, and when do you talk the assets and move them some place else? that's

. >> reporter: to bucky the vampire slayer where the town of sunningdale is built on top of the helled. >> reporter: now scientists say they discovered the entryway to the underworld or where the ancients considered it to be. if you're thinking it's a portal like this, this is what is left of the gate. these ruins were once an elaborate temple built around a cave people believe led straight down into the depths of hell. back in 24 a.d., strabo wrote "this space is full of a vapor so misty and dense that one can scarcely see the ground, any animal that passes inside meets instant death" which is why these scientists put on gas masks for their work. it is an archaeological find thrilling enough for an "indiana jones" plot but this is not the first claim laid to satan's front door. in turkmenistan this crater is one of the other alleged gates to hell. easy to see why. the fire there has been burning more than 40 years but back to those ruins in turkey they covered up the entrance to the gates of hell which is perhaps for the best. we all remember what happened in "raiders of the lost ar