the first is where cold rock is intruded by a hot magma. this is called contact metamorphism, and its effects are confined to a small area. the other setting is at a convergent plate margin, where the motions of the plates generates metamorphic conditions over wide areas, in places covering thousands of square kilometers. this is known as regional metamorphism. one of the main differences between contact and regional metamorphism is that temperature is the predominant cause of contact metamorphism, whereas regional metamorphism involves both temperature and pressure. the chemical changes that accompany contact metamorphism, especially of marbles, is seen on this hand-sized sample of a contact. on the left side is an intrusive igneous rock, a tonalite that came into contact with a limestone. the limestone was heated up, and at the same time there were elements that left both chemical elements-- that left the intrusive rock into the marble, and then elements that left the marble and went into the intrusive rock. the material leaving the intru

this liquid magma going hundreds of feet in the air. >> it's a tough shot to get, and this is in far east russia. >> it's more interesting that it's winter weather out there, it's cold, but seeing it, we think it should be hot. >> we see the snow in the foreground, and it gives you the strange sense of how the two things can exist at the same time. >> are those clouds? no, it's steam on the snow. >> somebody -- this thing is nearly 15,000 feet at its submit. this video was shot by a man that goes mountain climbing, and waited 20 hours to capture this video. >> it makes you respect the planet, and look at this rock that we live on in complete awe. >> ready for evil to be born? >>> it is the -- this is the dash cam footage from patrol cars in milwaukee. they're chasing a man who failed to stop, and the driver took off, and the deputies took off in a chase that reached up to 109 miles per hour. the chase lasted about 7 miles, and ends like this. the driver slams into the barelies of this ramp -- barrels, into the ramp, and crashes into the car. here's the video from the second patrol ca

how about the part when the man's heart was ripped out and he drops into hot magma?omplete with stimulated lava and a battery powered heart. and who can forget when indiana stole the golden statue. kids and adults get a kick out of the reenacting. he hooked it up to a giant sty rough foam ball. construction back started back in august. tries to recycle unused building materials. attention to detail is everywhere. he spent $4,000 and neighbors volunteered more than 1,000 hours. >> is there an easy answer? >> i think so. for four hours on halloween, everyone comes together. for those four hours, we are all on the same page. >> and the big day is tomorrow. the address is on church drive in san jose. for the little cards, they start at 4:00 until 6:00. that's when they pull out all the stops. then, it's free. >> it's like the only contractor who hasn't been out of work the last three years, been working on his own house. >> he really likes doing this. he figured why not? let's brung it to the house. >> all right, thanks. we'll talk to you later. >> what a perfect place t

how about the part when the man's heart was ripped out and he drops into hot magma.e create that whole sacrifice theme with simulated lava and a battery powered heart, and remember the giant rolling stone? bob says kids and adults get a kick out of the reenactment. he has rigged a garage door opener and hooked it up to a large styrofoam ball. bob is a contractor and tries to recycle unused building materials. attention to detail is everywhere. he spent $4,000 and a dozen neighbors volunteered more than a thousand hours. >> reporter: is there an easy answer to why you do this? >> i think so. i think for four hours at halloween everybody comes together, and for those four hours, we're all on the same page, enjoying something that's really cool. >> reporter: and so the big day is tomorrow. the nonscary hours for the little kids? 4:00 to 6:00 p.m. from 6:00 p.m. until the last person leaves, that's when they preference pull out all of the stops. the actors are out here, the music is blasting. it's fantastic. the address is church drive in san jose. you cannot miss it. th

how about the part when the man's heart was ripped out and he drops into hot magma?ob recreated that whole sacrifice scene complete with simulated lava and a throbbing battery powered heart and who can forget when indiana stole the golden statue and triggered the giant rolling stone in bob says kids and adults get a kick out of the reenactment. the garage door opener is hooked up to a giant ball. construction started back in august. bob is a contractor and recycles unused building materials. attention to detail is everywhere. he spent $4,000 and a dozen neighbors volunteered more than 1,000 hours. is there an easy answer to why you do this? >> i think so. i think for four hours on halloween, everybody comes together and for those four hours, we're all on the same page enjoying something that's really cool. ♪[ music ] >> reporter: so today halloween is the big day, the nonscary hours for the kids are from 4 to 6 p.m. from 6 p.m. on they pull out all the stops, all the actors are going full steam, the music is blasting, it's going to be a good time. the address is on c