. >> christa: liz palmer in germany, liz, thanks very much. the nuclear deal also went into effect this weekend. iran agreed to suspend its program for at least ten years. here's margaret brennan. >> we have now cut off every single path that iran could have used to build a bomb. >> reporter: president obama yesterday hailed the administration's nuclear deal with iran. it went into effect over the weekend after iran made good ahead of schedule on its promise to disable key nuclear facilities. it transferred 25,000 pounds of atomic fuel to russia, 12,000 centrifuged and poured concrete enter a plutonium reactor, u.n. weapons inspectors will now be on the ground watching whether iran cheats. in exchange, the white house lifted sanction, allowing iran access to $100 billion in assets. iranian businesses are no longer locked out of global markets. iran's ships are free the sail into foreign ports, and it can buy or sell goods like oil. today tehran issued an order to immediately pump 500,000 additional barrels of oil a day, a move that could furth

liz palmer is at the u.s. military hospital in landstuhl, germany, where the former prisoners are being treated. >> reporter: meeting reporters, amir hekmati looked relaxed and healthy. >> i thoap get home soon. i really want to see my family and be back on the land of the free. >> reporter: how are you feeling yourself fill fizically now? >> right now, i feel great. i have so much energy. like i said, i feel alive for the first time. >> reporter: his sisters are with him here in germany. but he's anxious to see his father in the u.s. who is too ill to travel. freedom, says hekmati, still feels surreal. >> i send the fact that i was going to be spending 10 years in prison, so this was a surprise. i just came one morning and >> reporter: did you believe them? >> no. absolutely not. >> reporter: but it was true. and in just hours, he was on a swiss government jet. >> as soon as we got out of iranian airspace, the slam pain bottles were popped. >> reporter: hekmati, a former marine and so a high-value prisoner, s

. >> pelley: liz palmer reporting from the london newsroom tonight. liz, thank you. a runaway natural gas well in los angeles has been flooding a neighborhood with methane for 76 days. 2,000 people have been evacuated as southern california gas company struggles to stop the flow. mireya villarreal is following this. >> reporter: this infrared video shows you what you can't see with the naked eye, a geyser spewing at least 70,000 pounds california neighborhoods less than two miles away. >> we call this the b.p. oil spill on land. >> reporter: environmental activist erin brockovich was blunt. gas is now reaching porter ranch neighborhoods 18 hours of the day. >> this isn't a one-time assault. this is an ongoing assault every single day. >> reporter: the source of the leak is a hole in a 62-year-old pipe. southern california gas chief operating officer brett lane. >> i personally apologize to the residents. this is something that, you know, the nuisance that they face, the different issues that they have faced, we do apologize for that. again, our focus right now is to

. >> liz palmer in the london newsroom tonight. liz, thanks. >>> now in technology, the next generation of cars may be able to avoid most accidents automatically. the federal government is kris van cleave has more from the detroit auto show. >> reporter: the newly proposed regulation will require technology to be standard in all new vehicles sold in the u.s. experts say it could be as revolutionary as seat belts and air bags. once finalized, the rule will call for vehicle-to-vehicle communication, or v2v, to be phased in over a few years. >> our goal is to see this technology put in place as soon as possible. >> reporter: secretary of transportation anthony fox. >> over the years we've had about 33,000 fatalities a year on our highways. if the technology then can substitute for human judgment and help us avoid those crashes. we think we can get as much as an 80% reduction. that's a huge change. >> reporter: as this department of transportation animation shows, v2v uses technology similar to wifi to link cars near each other on the

. >> pelley: liz palmer in the london newsroom tonight. liz, thanks. now in technology, the next generation of cars may be able to avoid most accidents automatically. the federal government is proposing a new technology regulation for carmakers, and kris van cleave has more from the detroit auto show. report the newly proposed regulation will require technology to be standard in all new vehicles sold in the u.s. experts say it could be as revolutionary as seat belts and air bags. call for vehicle-to-vehicle communication or v-to-v to be phased in over a few years. >> our goal is to see this technology put in place as soon as possible. >> reporter: secretary of transportation anthony fox. >> over the years we've had about 33,000 fatalities a year on our highways. it's a technology that can substitute for human judgement and help us avoid those crashes. we think we can get as much as an 80% reduction. that's a huge change. >> reporter: as this department of transportation animation shows. v-to-v uses technology similar to wifi to link cars near each othe

. >> liz palmer reporting from the london newsroom tonight. liz, thank you. >>> a runaway natural gas well in los angeles has been flooding a neighborhood with methane for 76 days. 2,000 people have been evacuated as southern california gas companies struggles to stop the flow. mireya villarreal is following this. >> reporter: this infrared video shows you what you can't see with the naked eye, a geyser spewing at least 70,000 pounds of gas every hour into southern california neighborhoods less than two miles away. >> we call this the bp oil spill on land. >> reporter: environmental activist erin brockovich was findings. a new study commissioned by a law firm suing the utility says gas is now reaching porter ranch neighborhoods 18 hours of the day. >> this isn't a one-time assault. this is an ongoing assault every single day. >> reporter: the source of the leak is a hole in a 62-year-old pipe. southern california gas chief operating officer brett lane. >> i personally apologize to the residents. this is something that, you know, the nuisance t

. >> glor: liz palmer, thank you very much. from the white house to the campaign trail, the prisoner swap is getting mixed reviews. here's julianna goldman. >> this is a good day. >> reporter: speaking just hours after the american prisoners began their journey home, president obama hailed their release as a result of smart and disciplined diplomacy. >> the united states has never been afraid to pursue diplomacy with our adversaries and as president i decided that a strong, confident -- confident america could enhance our national security by engaging directly with the iranian government. we have seen the results. >> reporter: his remarks stand in stark contrast to republican presidential candidates who today argued that negotiating with iran makes the u.s. less secure. whether it's over the release of american civilians. >> this should have happened years ago, george. we're giving them 150 billion dollars, this shnt be lapping now. >> reporter: american sailors. >> ultimately they released them but only after achieving what th

. >> liz palmer reporting from the london newsroom tonight. liz, thank you. >>> a runaway natural gas well

the hospital will offer them refuge so they can reconnect >> liz palmer, thank you very much. >>> from the white house to the campaign trail the prisoner swap is getting mixed reviews. here's julianna goldman. >> this is a good day. >> reporter: speaking just hours after the american prisoners began their journey home, president obama hailed their release as a result of smart and disciplined diplomacy. >> the united states has never been afraid to pursue diplomacy with our adversaries. as president i decided a strong, confident america could advance our national security by engage engaging directly with the iranian government. we've seen the results. >> reporter: his remarks stand in stark contrast to republican presidential candidates who today argued that negotiating with iran makes the u.s. less secure. whether it's over the release of american civilians -- >> this should have happened years ago. we're giving them $150 billion, this shouldn't be happening now. >> reporter: american sailors -- >> ultimately they released them but only after achieving what they wanted, that is to prov