Shatner, who is Canadian, will speak will fellow Canadian astronaut Chris Hadfield will speak via video and phone in a social media gathering sponsored by the Canadian Space Agency. Shatner and Hadfield, who have already traded messages via the Internet, will have their conversation live in front of audience members, who will have the chance to ask questions of Hadfield using the space-to-ground video link.

This will not be the first time the "" captain and the real-life space flyer have beamed messages back and forth. On Jan. 3, Shatner sent Hadfield a note via Twitter to ask what life is like aboard the spac station. Hadfield responded in kind.

"@WilliamShatner Yes, Standard Orbit, Captain. And we're detecting signs of life on the surface," Hadfield (wrote in his . Hadfield regularly posts messages and photos of his mission as @Cmdr_Hadfield.

Even before Twitter brought them together, Hadfield was on Shatner's radar screen. Shatner posed with a small photo cutout of the astronaut as part of the public outreach program for Hadfield's mission.

Hadfield and two crewmates American astronaut Tom Marshburn and Russian cosmonaut Roman Romanenko arrived at the space station in December aboard a Russian Soyuz spacecraft. They joined three other crewmates already living aboard the space station.

Hadfield is the flight engineer for the six-man Expedition 34 crew, and will take charge of Expedition 35 in March, when he will become Canada's first space commander.

Since NASA astronaut Mike Massimino became the first spaceflyer to use Twitter in 2009, astronauts aboard the International Space Station have used the social media service as a way to post mission updates and photos. Hadfield also used the website to release the first original song ever recorded in space (his tune "Jewel in the Night" has 88,927 views on YouTube as of today).

Visit SPACE.com on Thursday, Feb. 7, to watch Star Trek actor William Shatner call astronaut Chris Hadfield live at 10:40 a.m. EST (1540 GMT). You canon SPACE.com.

You can follow SPACE.com staff writer Miriam Kramer on Twitter . Follow SPACE.com on Twitter . We're also on  & . 

TORONTO (Reuters) - Worried about what your dog is chewing on when you're at work, or whether your home is secure while on vacation? New apps can transform old smartphones into remote security cameras for home monitoring systems.

Presence, which was launched late last month, converts a spare Internet-connected iPhone, iPad or iPod Touch into a free video camera with real-time video and audio streaming, and motion detection and notifications.

"Essentially we give you an inexpensive security system that you can use to monitor your house, or help you watch your kids, cats, elderly relatives or act as a baby or nanny cam," said Gene Wang, chief executive of the Palo Alto, California-based company People Power.

Unlike traditional monitoring systems that can be expensive and need technical knowledge to install and use, Wang said Presence is a free do-it-yourself system that can be set up simply by downloading and configuring the app.

To use it consumers install and login to their account on two devices - for example two iPhones. Then they can start the camera within the app on one of the devices and it can be viewed from the app on the other.

Triggers can also be set to record when motion is detected and to send alerts. The app can help to avoid false alarms, according to Wang, because it sends a video clip in an email to the user showing the motion that triggered the alert.

"With these high-end security systems, you have a lot of false positives and then the security company and police come out and it turns out it was your cat knocking over a broom or something like that," Wang explained.

He added that many people have replaced their old smartphones with new ones and a monitoring system would be a good way to make use of the old devices.

Another app created by a company called People Power 1.0 for iPhone and Android reads electricity meters in real time to show consumers how much they're spending and whether they are going over budget.

"The center of computing has switched to these smart computers that we all carry in our pockets," Wang explained.

"What people are going to want to be able to do is control their personal Internet of Things from their hands," he added, referring to Internet-connected devices in the home.

The company also plans to work with underfunded public schools to help them set up security systems using old devices donated by the community.

Other apps have similar functions. AirBeam is a home monitoring app for iOS that allows users to access video feeds from a Web portal.

Izon is an app that streams real-time audio and video from iZon cameras to iPhone and Android devices, and Ivideon, for iOS and Android, also lets people build their own surveillance system.

(Reporting by Natasha Baker; Editing by Patricia Reaney and Eric Beech)

Mortgage buyer Freddie Mac said Thursday that the rate on the 30-year loan dropped to 3.40 percent. That's down from last week's rate of 3.49 percent, which was the lowest since long-term mortgages began in the 1950s.

The average on the 15-year fixed mortgage, a popular refinancing option, fell to 2.73 percent, down from the record low of 2.77 percent last week.

The Fed is spending $40 billion a month to buy mortgage-backed securities. The goal is to lower mortgage rates and help the housing recovery. Fed Chairman Ben Bernanke says the program will continue until there is substantial improvement in the job market.

Some economists expect mortgage rates to fall even further because of the Fed's bond purchases.

The housing market already is benefiting from the lowest mortgage rates on record.Sales of both previously occupied and newly built homes in the U.S. are up from last year. Home prices are rising more consistently. And builders are more confident in the market and are starting to build more homes.

The broader economy is also likely to benefit from a revival in the housing market. When home prices rise, Americans typically feel wealthier and spend more.

Still, the housing market has a long way back. Sales and construction rates remain below healthy levels.

And some economists question whether lower rates will make much of a difference. The average rate on the 30-year fixed mortgage has been below 4 percent since early December. So most people who can qualify have likely already taken advantage of the lower rates.

Many people who would like to refinance or buy a home can't because they fail to meet stricter lending requirements or don't have enough money to make a down payment.

To calculate average rates, Freddie Mac surveys lenders across the country on Monday through Wednesday of each week.

The average does not include extra fees, known as points, which most borrowers must pay to get the lowest rates. One point equals 1 percent of the loan amount.

The average fee for 30-year loans was 0.6 point, unchanged from last week. The fee for 15-year loans also held steady at 0.6 point.

The average rate on one-year adjustable-rate mortgages dipped to 2.60 percent from 2.61 percent. The fee for one-year adjustable rate loans was unchanged at 0.4 point.

The average rate on five-year adjustable-rate mortgages fell to 2.71 percent from 2.76 percent. The fee remained at 0.6 point.

One politician from a party that not long ago ruled in a coalition derided what he called Italy's new "bonga bonga government." On Wednesday, amid increasing revulsion over the reaction, the government authorized an investigation into neo-fascist websites whose members called Kyenge "Congolese monkey" and other epithets.

Kyenge, 48, was born in Congo and moved to Italy three decades ago to study medicine. An eye surgeon, she lives in Modena with her Italian husband and two children. She was active in local center-left politics before winning a seat in the lower Chamber of Deputies in February elections.

Premier Enrico Letta tapped Kyenge to be minister of integration in his hybrid center-left and center-right government that won its second vote of confidence Tuesday. In his introductory speech to Parliament, Letta touted Kyenge's appointment as a "new concept about the confines of barriers giving way to hope, of unsurpassable limits giving way to a bridge between diverse communities."

His praise and that of others has been almost drowned out by the racist slurs directed at Kyenge by politicians of the anti-immigrant Northern League party, an on-again, off-again ally of long-serving ex-premier Silvio Berlusconi, and members of neo-fascist Internet groups.

In addition to his "bonga bonga" slur, Mario Borghezio, a European parliamentarian for the League, warned in an interview with Radio 24 that Kyenge would try to "impose tribal traditions" from her native Congo on Italy.

Kyenge on Tuesday responded to the insults, thanking those who had come to her defense and taking a veiled jab at the vulgarity of her critics. "I believe even criticism can inform if it's done with respect," she tweeted.

Unlike France, Germany or Britain, where second and third generations of immigrants have settled albeit uneasily, Italy is a relative newcomer to the phenomenon. France has several high-ranking government ministers with immigrant roots, and few French had a problem with the appointments: Former President Nicolas Sarkozy named a justice minister and urban policy minister, both born in France to North African parents, to his cabinet, while his minister for human rights was born in Senegal. Francois Hollande's government spokeswoman was born in Morocco and raised in France, and his interior minister was born in Spain. He also has two black ministers from French overseas territories one from Guyana and one from Guadeloupe.

Italy is another story. Once a country of emigration to North and South America at the turn of the last century, Italy saw the first waves of migrants from Eastern Europe and Africa coming to its shores only in the 1980s. In the last decade or two, their numbers have increased exponentially, and with them anti-immigrant sentiment: Surveys show Italians blame immigrants for crime and overtaxing the already burdened public health system. Foreigners made up about 2 percent of Italy's population in 1990; currently the figure stands at 7.5 percent, according to official statistics bureau Istat.

Some of the most blatant manifestations of racism occur in the realm of Italy's favorite sport, soccer which for Italians and others has shown itself to be a perfect venue for displays of pent-up emotions. In the case of a handful of Italian teams, soccer is a way for right-wing fan clubs to vent.

Mario Balotelli, the AC Milan striker born in Palermo to Ghanaian immigrants and raised by an Italian adoptive family, knows all about it. Perhaps Italy's best player today, he has long been the subject of racist taunts on and off the field: Rival fans once hung a banner during a match saying "Black Italians don't exist" while the vice-president of his own club once called him the household's "little black boy."

Balotelli called Kyenge's nomination "another great step forward for an Italian society that is more civil, responsible and understanding of the need for better, definitive integration."

The race situation is almost schizophrenic in Italy. In the same week Kyenge was made a government minister and Balotelli was named one of Time magazine's 100 most influential people in the world, AC Milan's cross-town rival, Juventus, was fined 30,000 euro for fans' racist taunts during a game against Milan in which Balotelli wasn't even playing.

"There was no racism 40 years ago because there were no non-white Italians," said James Walston, a political science professor at American University of Rome. "You need the other in order to hate the other."

"It will take a long time probably there will never be a completely racism-free society but it will take a long time for Italy to reach the sort of acceptance, multi-cultural acceptance that the rest of Europe has and North America has," he said in an interview.

Kyenge got off to a rocky start with the Northern League when, on the day she was named minister, she said one of her top priorities would be to make it easier for children of immigrants born in Italy to obtain Italian citizenship. Currently, such children can only apply once they turn 18.

The issue has vexed Italy for years and previous center-left governments have failed to change the law even though most Italians 72 percent according to a 2012 Istat-aided study favor it. It's not just a matter of a passport but has real impact on the ability of an immigrant family to integrate into Italian society: Children of non-EU immigrants born in Italy, for example, can't take advantage of the EU citizen discounts at the Colosseum and other cultural treasures, having to pay full admission prices to get in to learn the heritage of the nation where they were born. If they were Italian citizens, they'd get in free until they were 18.

But raising an issue that so riles the Northern League during an already tense political transition was enough to set off Roberto Maroni, the interior minister in Berlusconi's last center-right government and a top League official. Maroni immediately demanded that his successor as interior minister make clear his position on the law.

Other members of Maroni's party were more blunt: Italian newspapers quoted the head of the League in Italy's northern Lombardy region Matteo Salvini as saying that Kyenge was a "symbol of a hypocritical and do-gooding left that wants to cancel out the crime of illegal immigration and thinks only about immigrants' rights and not their duties."

La Repubblica newspaper on Tuesday, meanwhile, cited the vile insults directed at her on fascist Internet groups such as www.ilduce.net . Repubblica said the antagonism was born from the League's basic opposition to a minister who tends to favor immigrant rights. "But the racist origins had to explode. And here they are. True, they're consigned to the stupid transience of the Web, but they're a sign of the widespread climate of hatred" in the country, the paper wrote.

Coming to Kyenge's defense was Laura Boldrini, the president of parliament's lower chamber, who for years was the chief spokeswoman in Italy for the U.N. refugee agency. In that role she frequently defended the rights of immigrants and squared off with Northern League leaders after they pushed through a controversial 2009 policy to send back would-be Libyan migrants without screening them first for asylum.

"It is indecent that in a civil society there can be a series of insults on websites but not only there that are being hurled against the neo-minister Cecile Kyenge," Boldrini said. "Like many people, watching her take her oath of office I felt that Italy was taking an important step forward, and not just for 'new Italians.'"

Also defending Kyenge was the other foreign-born minister in Letta's government, Josefa Idem, a German-born Italian who won five Olympic kayaking medals before retiring after the London Games. Idem is Italy's new equal opportunities minister one of seven women in Letta's government and in that role authorized an investigation by Italy's national anti-discrimination office into the racist online slurs directed against Kyenge.

Italian news reports quoted Idem as saying she was doing so in her capacity as minister "but also as a woman."

Sociologist Michele Sorice at Rome's Luiss University said Italians have long harbored racist attitudes, stemming from the nation's colonial past in north Africa, but that they stayed hidden until the Northern League "legitimized" xenophobic political rhetoric after entering the government in the 1990s. The League denies it's xenophobic and says it is merely protecting the interests of Italians.

Italy has since become more sensitized to the issue, Sorice said, but it still lags behind its European and North American partners. Changing the law on citizenship, as Kyenge wants, "wouldn't do anything more than to bring Italy into line with the great European traditions," he said.

But he was doubtful that this particular government, made up of longtime political rivals, could pull it off when even previous center-left governments had failed to do so.

"It remains to be seen how this can be done on a practical level with a coalition government," he said.

___

Tricia Thomas in Rome and Lori Hinnant in Paris contributed.

___

Follow Nicole Winfield at www.twitter.com/nwinfield

"It's the first problem of its kind on this system seen on the three years during which it has been used," the Italian team said on their website.

"The failure is not something that causes concern for the long term."

The DRS (drag reduction system) is a driver-operatedadjustable flap that can be opened to provide more speed for overtaking in certain designated zones on the circuit.

Ferrari team principal Stefano Domenicali said Sunday's failure had prevented the Spaniard, who had been in second place, from fighting Red Bull's eventual winner Sebastian Vettel for the victory.

Alonso, who won the previous race in China, finished the Bahrain Grand Prix in eighth place and is fourth overall in the standings and 30 points behind Vettel.(Reporting by Alan Baldwin, editing by Patrick Johnston)

The fire was at a shut hydrotreater heat exchanger, according to sources familiar with operations at the refinery.

Exxon did not identify the unit but confirmed the fire broke out at 10:30 a.m. CDT (11.30 a.m. EDT) on a shut unit undergoing planned maintenance work at the refinery. The blaze was quickly brought under control and extinguished, said company spokeswoman Rachael Moore.

Six of the 12 workers were taken to regional hospitals "for further medical evaluation and treatment," Moore said.

The sources said the workers were thought to have been welding on a section of the heat exchanger when the fire broke out.

All other employees and contractors working at the Beaumont refinery have been accounted for, Moore said.

The hydrotreater is part of the refinery's system for removing harmful substances from feedstock so the motor fuels produced will comply with federal environmental regulations. It uses hydrogen under high pressure in the process.

A heat exchanger heats feedstock going into a unit and cools product coming from a unit by having them pass close to each in dense system of piping.

In 2010, a hydrotreater exploded at Tesoro Corp's Anacortes, Washington, refinery, claiming the lives of seven workers.

(Reporting by Erwin Seba in Houston and Naveen Arul in Bangalore; Editing by Gerald E. McCormick and Marguerita Choy)