mach, ernst mach, german physicist of long ago, named after him, mach 1, mach 2. let's talk about cars. mach 1, right? mach 1 means when you have a car go 750 miles an hour or about 340 meters per second. that's fast. sound travels fast. not compared to light-- about a million as fast as light, but nevertheless sound. about 750 miles an hour. so if you're in an aircraft going 600 miles an hour, you don't produce a shockwave. that's because the waves don't pile up in front of you. i mean, you're traveling along like this, okay, and your wave is sort of like this. see, the waves are still going faster than you're going. it's only as you go as fast as the sound. of course then you get like this, okay? and you know what, those waves don't pile up anywhere but right here. so when an aircraft is going to the speed of sound and a little bit faster, down here they don't get a sonic boom. you only get the sonic boom when it's going appreciably fast enough so you that you can generate this shockwave like that. so the misconception is, people think that airplanes produce son

it's a bra made out of paper-mache and r2d2 parts. wait, it makes noise. >> what if you are not a dd? can you get one? can you get an rt-c2? >> it's only one size. >> he clearly handmade the cups. you could probably make them in any size. >> r2-aa2. there's two versions. the easy version made with duct tape and the ultimate r 2 bra. the best explanation is, i thought the idea was hilarious and somebody needed to make it. >> you could make a male version. >> touche. you are a huge "star wars" fan. are you going to get a pair? she's wearing it now, watch. >> if you want to be the droid he's looking for, be this. >> this makes me wish i had boobs of my own. >>> the sound of this music gets squeaky when this happens. ♪ >>> see the performance that will blow you away. and dog heads out into the snow to get the paper. >> maybe he'll find it in the snow. >> you have to sniff out the paper at this point. >> he gets it. find out what happens when owner [ man ] we have a go for auto sequence start. t-minus 5, 4, 3, 2, 1... ignition. [ male anno

. >> mach speeds and hammock? >> ham-mach. >> he really was moving there. >> look at the size of the guys powering that. >>> this is one of those videos that starts out kind of normal and takes a turn for the really weird. at first, we see a shot of a girl in a red dress, by a motorcycle, talking to a dude. normal. here's where it starts getting crazy. another girl comes out of nowhere. now a fight is on. i don't know if this is her man and she's upset. then a guy in a roman guard outfit. he comes out to sort of break it up and now watch, if that's not weird enough, we're taking the weird level to maximum right now. the other girl runs up and rips that red dress off of that girl. she immediately puts a helmet on and other piece of clothing to try to cover herself up. obviously there's a crowd. pretty weird scene, the video is going viral. a lot of people making the same faces, a lot of people -- >> this is fake. this is sped up. >> what dress just pops off like that. you pause it right here -- >> it almost looks l

. >> the rest of the world is moving at mach speed. >> his tour edges tuesday. >> 36 families celebrated moving into their new homes they help build. jackie speier and other local leaders joined the ribbon-cutting. habitat of humanity did the building. the residents have to meet several requirements in order to live in one of the homes. >> application process is grueling and so many people, it's kind of a random drawing and even after that, you have just a lot of paperwork. >> the residents also provided some sweat equity working with volunteers and professional contractors to build their dream homes. >>> still at 9:00, how authorities believe everyone lived after a plane broke in half during a crash. also, what happened to a bus driver after a brutal attack is caught by a surveillance camera. and a yosemite vacation nearly turned to tragedy. how a teen hero saved the day. >> skies are mostly clear and that could allow for temperatures to drop into the upper 30s in the north bay valleys. cooler air, more wind and >> tomorrow a flight in indonesia crash landed today in the water. remarkab

>> they call this the mach 1 super serve. it was invented by a guy named matthew chapman. it through a cannon. apparently it was shot out at 700 miles per hour. >> your 737 doesn't go that fast at take off. >> you can see it puts a hole through the paddle. >> when have you seen anybody need eye protection for a game of ping-pong? >> yeah. >>> these guys, they're going around talking to strangers. >> excuse me. >> take a picture. >> yeah, yeah, yeah. >> the craze these dudes >>> if you're working for the circus and you need a jump rope for one of your performances, and you don't have a rope, you look over at jane and you have her volunteer. >> oh, boy. oh, no. >> there are the super performers and she suddenly became the jump rope. >> oh, my goodness. >> someone actually jumps rope over her. >> a lot of stress on the jumper. you don't want to make a miss step. you could land right on jane's stomach. >> and a lot of stress on the shoulder joints. look at what they're doing. if we look closely, they don't look normal. >> i would really be impressed if they did double dutch. >

. >>> in other action the miami heat take a 2-0 lead over mach with a 98-86 win, and the knicks moveead over celtics, new york topping boston, 87-71. >>> and in baseball just call baseball's outfielders b.j. upton the bash brothers. dustin smashes his league-leading tenth home run of the year. the braves would win, 4-3. and in the nightcap b.j. goes deep in the fifth inning. it's his third homer. next up is justin. you guessed it. he bashed another one, this one to center field. it's the second time that brothers have homered in the same game. the braves win, 10-2. >>> when we return, a harsh new report on the obama administration's handling of the terror attack in benghazi, libya. >>> plus, way of the samurai. we'll tell you how a utah man defended a neighbor under attack. we'll tell you how a utah man defended a neighbor under attack. you'll find reviews on home repair to healthcare written by people just like you. with angie's list, i know who to call, and i know the results will be fantastic. angie's list -- reviews you can trust. you may be muddling through allergies. try zyrtec

using data to connect patients to software, to nurses to the right people and maches. ♪ helping hospitals better, while dramatically reducing waiting time. now a waiting room is just a room. [ telephone ringing ] [ static warbles ] [ beeping ] red or blue? ♪ gerri: a new report shows the growing number of patients are misdiagnosed purdue followed doctor's orders? here is what your posting on facebook. mostly but not without question they can still not yet what we're feeling and the language can fail less. i tell doctors say are my advisers for serious issues every asset question on gerri willis.com only 57 percent said sometimes. 3 percent said never. putting the obama phone program on steroids for started by ronald reagan to provide low income families with a phone in case of emergencies. in 2008 obama added so funds sending the cost of from 143 million to about $2 billion today that shows it is out of control. the fcc says the top five companies can verify the eligibility of 41%. what is worse they're hoping to expand the program to include high-speed broadband this is out of control.

two of those arrested were papier-mache masks depicting bush and former vice president dick cheney, prompting some to joke the pair had finally been arrested for their crimes. during his tribute to bush at thursday's event, obama did not mention the iraq war once. the new york times has weighed in another aspect of bush's legacy -- the prison at guantanamo bay, cuba. in an editorial, the times board said guantanamo was "essentially a political prison." mean law, kenneth wainstein, who was the top national security official at the justice department under bush, told the new york times in exit strategy is needed for the prison. officials now admit 93 of 166 prisoners are participating in a hunger strike at guantanamo, while lawyers for the prisoners say nearly all prisoners are taking part. one attorney said the hunger strikers have despaired as obama has failed to deliver on vows to close the prison. authorities in bangladesh fired tear gas and rubber bullets at protesters during a massive rally by garment workers following a building collapse, the death toll for which is now nearing 300. hund

. >> is that a papier-mache' hat or head in the boat too? oh, yes. there's some bizarre things going on there. >> shall we go to traffic? >> why not. kind of traffic-related. >>> good morning. we are going to talk about the bridge commute getting into and out of san francisco. no problems for 101 across the golden gate bridge. there was roadwork overnight and all lanes are being reopened. sub traffic is fine getting into the city. the bay bridge commute westbound leaving oakland looking good as with the san mateo bridge where westbound traffic is fine leaving the hayward area into foster city. on the right, you can see more folks out there in the westbound direction. for the rest of the commute heading for 680, keep in mind there is roadwork this morning and you can see some of the slow traffic there on the yellow sensors. northbound 680 at north mission. three lanes are traffic shut down for construction until 6:00 this morning. that's really the only area with slow traffic. 880/237, still free and clear of any big delays. we did not have any constr

apparently space ship ii you saw hit mach 1.2 yesterday.les in case you want to do the math. pretty fast. who knows how much it takes to get into space, but sure they're getting close. >> would you spend money to go to space? something you would want to do? >> you know, no. short answer. i don't know why. just kind of not interested. >> not that it wouldn't be cool. to spend a lot of money. yeah, i agree. >> there's no sight-seeing. >> i'd rather go to hawaii than outer space. >> no sightseeing. no beach in outer space. can't get a tan. >> no pina coladas. >>> coming ip -- coaching football's lingerie league, a football player considers an offer. >> angry moves at the end of the world. what led up to the first brawl on the biggest mountain on earth? you are watching "world news now." ♪ ain't no mountain high enough ♪ ♪ nothing can keep me keep me from you ♪ ♪ ♪ the powder is moist, lifting 3 times more dirt than vacuuming alone. don't just vacuum clean, resolve clean. when not treated properly, your carpet stains can reappear. [ laughing ]

. >>> senators begin voting this afternoon on amendments to a gun control bill mach.rry reid says an expanded deal on background checks will be among the first votes. a debate could last for two weeks, perhaps even more time. >>> happening right now, looking at an increasing threat of tornadoes today. let's check in with jennifer delgado live at the cnn weather center in atlanta w. who is in the danger zone? >> anywhere in the red graphic, so joplin, stulsa. the threat for hail will last all day long. we're already looking at storms moving through areas, from colorado over to parts of west virginia as well as into tennessee. today the fuel will be the clash of the two air masses. the warm, moist air from the south, the cold air from the north. that's the region we're talking about, across oklahoma, texas, as well as into parts of missouri and kansas. this will be the area for the strongest storms. this is the area for the moderate risk, what you are seeing in yellow, a slight risk. this gives you an idea of what the problems will be. look at the temperature gradient t

drones mach it easy to kill.n ethical and moral issue we create a set of con straibt on the new and very scary. thank you. thank you, david. our next speaker is avery plaw. david raises excellent points. i'm going ignore them. it for now. in the interest of generating debate. what i'll try to do is lay out a positive case for the use of drones in certain circumstance and litigate the detail of the proper definition of imminence, for example, in the question and answer period after wards. tonight i'll argue that drone strikes against individual known terrorists, pose an imminent threat and cannot otherwise be neutralized for good and defensible policy. hour, i will also argue that some types of strikes, notably what are called cig qhur strikes are counter productive and should stop. that's the position i'm going defend today. i'm do it by outlining five arguments for drones. first, the effectivenesses, second, the safety of operators, third, the discrimination, forted, the lack of alternative, and fifth, venture t