here's nbc's erica edwards. >>> and lift off -- >> reporter: with the launch of "atlantis," history andopefully a new treatment for osteoporosis. >> 4 and a half manufacture million pounds of hardware and humans -- >> reporter: and 30 mice currently floating in microgravity. half treated with an experimental osteoporosis drug, the other half with a placebo. the mice were sent up by a team of researchers led by this man who got to see the launch in person. >> we actually watched it from right there. >> reporter: he's the university of north carolina chap ill hill's dr. ted bait man. >> i am a really big space geek. >> reporter: space geek or, more appropriately, an expert in bone loss during spaceflight. >> astronauts lose bone at a very rapid rate. at least five times the rate that women lose bone here on earth. >> reporter: that's because bones are designed to holds up under the pressure of gravity on earth. in space, bones don't get the gravity they need thrive leading to bone mass. space exploration has been pitch at ol to osteoporosis research. scientists have known about and studie

erica edwards, nbc news. >> we still have more ahead on "today in the bay."till to come, she thought she was getting a deal on a wedding dress and what she got was a disaster. internet shopping that went wrong and what to do when the biggest day of your life is threatened by a bad dotcom. >>> at a wedding all eyes are on the bride and her pick of dresses. some websites that provide designer gowns aren't doing what they promise and that's putting brides in an expensive bind. >> reporter: every bride wants to look her best on the big day. the avid shopper wanted to see if she could score a dress for less online. >> they can make the same exact dress and i can save anywhere close to $900, i was all over that. >> reporter: she found the dress of her dreams online. this silk confection with elaborate beading advertised for about $400. but she says what arrived in the mail looked nothing like the picture. >> it was a disaster. in the photo this part of the waist comes down to a v. there's no -- can you tell? it's not real wedding dress material. there's no way. >>

erica edwards, nbc news. >>> chantix has been on the market since 2006.er three months of use, up to half users stop smoking, at least temporarily. >>> when we come back on news4 at 4:00, they have been hard at work. the jury finally now deliberating the fate of casey anthony after hearing evidence for six weeks. we'll go to orlando for the very latest. >>> and exxonmobil is trying to clean up an oil spill in the yellowstone river. >>> and for all of your news, follow news4 online. search nbc washington on facebook and twitter. >> you can also find us at pl >>> the four astronauts who will close out nasa's space shuttle program flew into florida today from houston. on friday, the four will take "atlantis" on the last flight of nasa's 30-year shuttle program. "latlanti "atlantis" will make a supply run before joining "discovery" and "endeavour" in retirement. >>> all eyes on the skies tonight, doug kammerer. >> this is a forecast where you say it's going to be dry, people are going to be mad. >> you're rockin' the place. >> i am. and almost called out and

erica edwards, nbc news. >>> chantix has been on the market since 2006.onths of use, up to half of its users do stop smoking. at least temporarily. >>> lindsay, what are we looking at? >> today, the nationals' best big thing, moving up. the black widow strikes again in new york. and jayson werth turns boos [ female announcer ] keurig brews more than just hot coffee. now you can brew over ice for delicious iced coffee or tea. hot or cold, keurig is the way to brew everyone's favorite cup in under a minute. choose. brew. enjoy. keurig. i am playing with my friends. hey, mrs. d... joseph? sarah! it's mommy's turn now. let's go. [ male announcer ] the average home has over four internet-connected devices. we were gonna storm the castle. i love your hair. [ sarah ] thanks i went to your guy. it's perfect. i thought we were storming the castle. [ male announcer ] that's why you need the internet rated #1 for supporting multiple users and devices simultaneously. verizon fios. a network ahead. call the verizon center for customers with disabilities at 800-974-tty

erica edwards, nbc news. >>> still to come on news4 at 4:00, one woman suspects discrimination after the tsa searches her hair. her story in our next half hour. >>> >>> and welcome back. i'm wendy rieger, filling in for jim handly. >> i'm pat lau lawson muse. casey anthony will be out of jail in less than a week. a judge gave her four years with credit for time she has already served. the release date is next wednesday, july 13th. she was found not guilty of killing her daughter, caylee by a jury on tuesday. >>> the countdown to space shuttle "atlantis's" launch is under way. "atlantis" is set to liftoff just before 11:30 tomorrow, but there are thunderstorms under the pad in cape canaveral which could delay the launch until saturday. this mission will be an end to nasa's 30-year space shuttle program. >>> president obama met with congressional leaders today for talks about raising the debt limit. afterward, the president said the talks were frank and constructive. but he said both sides are still far apart. everyone agreed, there will be political pain on both sides by the time they

erica, good morning. >> good morning to you. >>> going to get you latest on prince william and kathryn's north american tour. they are now on prince edward's island. amanda walker of sky tv has more. >> reporter: a grand entrance to quebec aboard "hmcs montreal." the center for disadvantaged young people, a break from formality which both seem to appreciate. they appear genuinely impressed by this magic trick, a rare moment when somebody else is in the spotlight. william indulged in a little table football, the champ let off steam before duty called. amid the pomp of the city ceremony william gave a speech slowly in french, this is canada's french heartland. the couple can't be unaware of sensitivities that lie most strongly with separatists, once again they faced protests, this meant heavy security, fans who got to meet them were hand picked from the crowd by guards. >> it's an honor, a real honor to meet any member of the royal family. for me especially -- sorry -- for me, i'm a royalist through and through. it's a great moment for my life. >> reporter: and kept a small fraction of the crowd happy, at times it was more like a movie premi