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Constitution is sacrosanct. >> reporter: given congressional deadlock even after last year's sandy hook massacre, they're thankful congress is at least on a path to extending the current ban on undetectable arms. >> allowing people to slip through metal detecters with guns to get onto airplanes is not a position that i don't think politicians can take particularly after 9/11. >> reporter: senate democrats will make an attempt next week to close the loopholes and ban new 3-d plastic gun and other weapons that allow people to take metal out and evade metal detecters. privately democrats admit th...

Was considered science fiction, but now up against a deadline, the ban will lapse this monday. lawmakers in both parties punted on making any updates. >> the legislation that the house passed doesn't address the fact that somebody could sit in their house and print out a 3-d gun. >> exactly. this law was enacted 25 years ago, and technology has advanced to the point where people can make their own plastic guns. and this law does no prohibit that. >> reporter: some democrats in the senate say they'll try to close loophesand the ban on undetectable firearms but they have powerful, familiar oppos...

Actress. here's the key. this movie, the arena sequences were mostly shot with 70 millimeter imax cameras. what that means for you an as audience member, when you see the movie in imax, there are black bars, but when she's racing for "the hunger games," the image expands to a full blo blown imax shot for an hour. >> the city scenes and joker scenes. >> "dark knight" was way more than be a super hero movie. >> you're recommending see it in imax. don't waist your money on 3-d, see it in imax. >> 100% worth it. if you can find a true imax theater, eight story imax screen. that is going out worthy...

They are not actually there. >> how would it work? >> 3-d output allows you to see the holograms in 3-d. the scanner scans your environment and tells the computer where to place the 3-d graphics relative to the user and the world. >> as this video pro invited by metashows, the glasses could be used to sculpt a virtual vase with your fingers or play laser tag with your friends. unlike google glass, which has a smaller screen, controlled mostly by your voice, meta glasses could one day have an infinite screen controlled by your hand. >> it really represents a huge shift from 2-d computing. >> th...

Conditions in the real estate market but we do need strategies to try and get support for home buyers. so now the dutch have engaged in setting up institutions like fannie and freddie and here in the u.k. we have a government backed mortgage scheme. help to buy here in the u.k. looks like some of the things that were done with fannie and freddie. >> good luck with that. >> yeah. >> real quick, the $100 bill. there's a new one out ands got a lot of tech features so people can't duplicate it. >> absolutely. apparently if you move this, i mean, i haven't touched one but as i understand it, you ha...