‘Not my president’: Thousands protest Trump in rallies across the U.S.

Nationwide demonstrations against the election of Donald Trump spilled into a second night Thursday with thousands of protesters surrounding his buildings in New York and Chicago and clashing with supporters of the president-elect in some areas.

Condemning Trump's litany of crude comments about women and his attacks on immigrants, demonstrators marched along city streets, blocked intersections, burned effigies and, in some places, gathered outside buildings bearing Trump's name.

“Not my president,” chanted some of the protesters, while others waved signs with the same message.

Portland police said that the protests in the city had turned into a “riot” punishable as a “Class C Felony” late Thursday. The department had earlier warned that some drivers were being attacked during the demonstrations and advised protesters to stop the use of “illegal fire devices.” As the night wore on, the vandalism increased.

“Due to extensive criminal and dangerous behavior, protest is now considered a riot. Crowd has been advised,” the police officials said in a Twitter post.

The protests earned recriminations from Trump, who met with President Obama at the White House Thursday morning, “Just had a very open and successful presidential election. Now professional protesters, incited by the media, are protesting. Very unfair!," Trump said on Twitter.

It was his first comment about the protests and one of few statements he has made since claiming victory over Hillary Clinton early Wednesday morning. In 2012, after Obama was elected to a second term, Trump tweeted: “We can't let this happen. We should march on Washington and stop this travesty. Our nation is totally divided!”

Teressa Raiford, a community organizer in Portland, said what began as a peaceful Black Lives Matter protest transformed Thursday as the night wore on due to demonstrators not affiliated with the group.

“They’re not coming to show solidarity, they’re coming because they know there’s going to be a big crowd,” Raiford said. “They don’t respect our movement.”

Portland police said on Twitter that some protesters trying to stop the property damage were being threatened by others. “Many in crowd trying to get anarchist groups to stop destroying property, anarchists refusing,” one tweet read. Another police tweet said: “Police advising crowd there are gas and flares being prepared by protestors. Please leave for your own safety.”

Mike Bivins, a local freelance journalist, said the protest took a noticeable turn as demonstrators passed a Northeast Portland car dealership, where some starting breaking car windows. A dumpster and a newsstand were set on fire.

Bivins said a Black Lives Matter organizer at Pioneer Courthouse Square told demonstrators earlier in the day not to police “anyone else's form of protest.”

“I guess he didn’t think it would rise to this level,” Bevins said.

At least 100 people were arrested Wednesday night during the first wave of national protests, according to police officials, most of them at one in New York. While most of the demonstrations remained peaceful, police in Oakland, Calif., said a rally there turned violent when some in the massive crowd injured three police officers by throwing rocks and fireworks at them.

The unrest underscored the fractures in a country that awoke Wednesday to learn that Trump had pulled off an unexpected victory over Hillary Clinton, his Democratic opponent, and more were planned for the weekend.

Khizr Khan, the father of a Muslim U.S. Army soldier killed in Iraq and an outspoken critic of the president-elect, told CNN’s Anderson Cooper that protests are “indicative of how many people have been intimidated, how many people feel that their rights have not been fully guaranteed” because of Trump's campaign rhetoric.

“We appeal to the surrogates of Donald Trump and to him, himself, that he needs to take the first step to make sure that the concerns that are being addressed,” said Khan, who asserted that Trump supporters are “attacking Muslims — Muslim women, snatching their headscarves in New York, in Louisiana, in Los Angeles. Mosques are being attacked by people throwing things. And that needs to stop.”

An immigration hard-liner is joining Donald Trump's transition team

One of the architects of several of the nation's most controversial immigration laws is set to join President-elect Donald Trump's immigration policy transition team.

Kansas Secretary of State Kris Kobach said Thursday that he planned to help Trump reverse President Obama's immigration policies.

"There's going to be a lot to do there in part because Mr. Trump and Mr. Obama are diametric opposites when it comes to immigration policy, so there will be a lot of changes," Kobach told a Kansas television station. 

Noting Trump's central campaign pledge to build a southern border wall and emboldened by Republicans' retaining control of Congress, Kobach said, "There's no question the wall is going to get built. The only question is how quickly will it get done and who pays for it." 

Trump, who met with Obama at the White House on Thursday, also has vowed to overturn many of the president's executive actions on immigration, such as Deferred Action for Childhood Arrivals that temporarily shields from deportation people who were brought to the U.S. illegally as children.

Factorization with the help of Fprmula

Factorization with the help of formula

Factorization

Factorization

Factorization

9th Class Mathematics Chapter No 05 Exercise No 5.1

Formulae

Factorization with the help of Mid Term Break Method

Factorization with the help of mid term break method

Factorization with the help of mid term break method

Highest Common Factor

Highest Common Factor

N. Korea preparing for intermediate-range missile within next three days: U.S. officials

SecondMarket, the secondary transaction manager whose involvement in Facebook’s pre-public offering fire sale of shares arguably hurt the social network’s eventual initial offering, is now launching a new product to put more control over secondary sales in the hands of startups.

With private companies staying off the public boards longer and valuations for later stage rounds climbing,  an increasing number of firms are launching to invest in secondary sales (sales of shares owned by company employees or investors that were distributed as part of earlier rounds or as compensation).

As these firms start preying on SecondMarket’s turf, the progenitor of the secondary sale for venture capital investments is offering a new product to later-stage venture backed companies that focuses on better managing the secondary process (oh, the irony).

“We did about $1.5 billion in company-controlled secondaries last year. And the model there is a broad-based tender offer,” says SecondMarket chief executive Bill Siegel. “[But] the broker market is back and it’s worse than ever. If you’re an employee at any of the highly valued startup companies, they’re getting offers to sell their equity [every day].”

To ensure that startups can manage the process themselves and avoid a Facebook-style debacle, SecondMarket is pitching what it calls the “transfer facility“.

“[Startups] decide who the end buyers are in the facility and they set up the transaction rules,” says Siegel. “We do it at no cost to the company. It’s a meaningful evolution that puts control back in the hands of the company, so that they can control who owns their stock over time.”

According to Siegel, the demand for this type of product is coming from startups themselves, who are beginning to view the secondary bids coming from would-be shareholders as an annoyance and a distraction for employees.

Two undisclosed companies are already in the process of setting up transfer facilities for their employees now, Siegel said.

The pitch that SecondMarket is making is ease-of-use. Companies typically have right of first refusal when an employee or investor looks to sell their stake, and can manage the process themselves, but SecondMarket argues that it’s time-consuming and costly with onerous paperwork requirements and the re-valuation of stock based on different capital tables from different rounds.

In some ways, this is the product that addresses what Siegel saw as the future for secondary share sales in an interview with Fortune:

UK must retaliate against cyber-attacks says chancellor

The UK must be able to retaliate in kind against cyber-attacks, the chancellor has said.

Philip Hammond added that hostile "foreign actors" were developing techniques that threaten the country's electrical grid and airports.

The warning came within a speech describing how the government plans to spend a previously announced £1.9bn sum on cybersecurity.

It also addressed ways to tackle cyber-scammers and defend businesses.

"If we do not have the ability to respond in cyberspace to an attack which takes down our power network - leaving us in darkness or hits our air traffic control system grounding our planes - we would be left with the impossible choice of turning the other cheek, ignoring the devastating consequences, or resorting to a military response," Mr Hammond said as he described the National Cyber Security Strategy in London.

"That is a choice we do not want to face and a choice we do not want to leave as a legacy to our successors."

The strategy will help enlarge specialist police units that tackle organised online gangs.

In addition, some cash will also go towards education and training of cybersecurity experts.

"If we want Britain to be the best place in the world to be a tech business then it is also crucial that Britain is a safe place to do the digital business," the chancellor added.

"Trust in the internet and the infrastructure on which it relies is fundamental to our economic future."

Mr Hammond's speech followed a warning from MI5 that Russia poses an increased cyber-threat.

"It is using its whole range of state organs and powers to push its foreign policy abroad in increasingly aggressive ways - involving propaganda, espionage, subversion and cyber-attacks," Andrew Parker, the domestic security agency's director general, told the Guardian.

The Kremlin has dismissed the allegation.

"Until someone produces proof, we will consider those statements unfounded and groundless," said spokesman Dmitry Peskov.

Tackling radical Islam 'next big battle' for Ukip, leadership candidate says

Tackling radical Islam should be "the next big battle" for Ukip following its successes over migration and the European Union, leadership candidate Suzanne Evans has said.

Her stance was echoed by the frontrunner in the race to succeed Nigel Farage, former deputy leader Paul Nuttall, who told a campaign hustings in London: "We need to tackle radical Islam. We need to say 'No' to Sharia courts in our towns and cities and 'No' to any Saudi funding of mosques in our country."

And a third candidate, London Assembly member Peter Whittle said the party must defend "British values and British institutions" by "fighting the advance of Sharia law" and enforcing the legal ban on female genital mutilation (FGM).

Mr Nuttall was loudly applauded at the first hustings of Ukip's second leadership election in a matter of months as he declared his ambition to replace Labour as "the party of patriotic working class people"

And he declared: "Ladies and gentlemen, we are the future. We have a fantastic opportunity to not only ensure that Brexit means Brexit but to shape the future of our country."

Mr Nuttall has positioned himself as the "unity" candidate following vicious faction fighting within Ukip which has seen the party described as being in a "death spiral" by MEP Steven Woolfe, who pulled out of the leadership contest after being involved in an altercation at the European Parliament.

In an LBC radio debate ahead of the hustings, the former deputy leader admitted Ukip had been "dysfunctional" over the past year and appealed for feuding activists to "let bygones be bygones".

At the hustings, rival candidate John Rees-Evans said that "Ukip is sick" as he set out plans for members to determine policies for the party's manifesto. The party was currently "pandering to the Westminster bubble" and trying to "get pally with the media" rather than following its members wishes, he said.

Ms Evans, who presented herself as the candidate able to "reach out" beyond Ukip's traditional support and attract ethnic minorities and Labour voters, said it was time for the party to fight multiculturalism as strongly as it previously tackled uncontrolled migration.

And she said: "One of things I feel very strongly about is radical Islam. I really think this is where the next big battle is going to be fought. The EU we've fought, immigration we've fought. This is, I think, the next big battle.

"I want to fight this from a feminist perspective, because I think the way women are treated by Sharia law and FGM is staggering. How can this be happening in our country in this day and age?

"I get so angry about the fact that I have certain rights as a white middle-class woman that a woman in a minority community doesn't have. That is unacceptable."

Following speculation that victory over Brexit has left Ukip a spent force, Mr Nuttall said that the way forward for the party was to "replace the Labour Party".

"We replace them and we take away a party that dislikes our flag, refuses to sing our anthem and says nice things about the IRA," he said. "We replace them and we become the party of the patriotic working class."

Mr Whittle told the audience of around 200 that he would like to see every school in the UK flying the Union flag and putting a picture of the Queen on the wall.

And he said it was "disgusting" that Olympic gymnast Louis Smith should be subjected to a "show trial" after being caught on video mocking Islamic prayers.

During the earlier radio debate, the four candidates split over capital punishment.

While Ms Evans and Mr Whittle opposed the death penalty, Mr Nuttall said he backed its reintroduction for child killers and Mr Rees-Evans said he would bring it back for paedophiles and child murderers.

Challenged over whether all paedophiles should be executed, Mr Rees-Evans said "Yes", before adding that he would not necessarily impose the death penalty in cases involving "someone who looked 18 and was 15-and-a-half".

"It obviously depends what you define as a paedophile," he said. "I would have the death penalty for somebody who is (targeting) pre-pubescent (children)."

Clinton campaign dismisses polls putting Donald Trump in the lead

Clinton campaign officials have dismissed a poll suggesting that Donald Trumpmay have taken the lead in the final days before Tuesday’s election, insisting they see no evidence of a negative impact from Friday’s new FBI email disclosures.

Speaking as Hillary Clinton flew to Florida for a whirlwind series of campaign events, a senior campaign official conceded there was a tightening in the polls but only what they had already expected would happen after the debates finished.

Asked by reporters on the campaign plane to respond specifically to a new ABC News/Washington Post tracking poll which put Trump one point ahead, the aide described it as “bad polling”.

“It’s not what we see at all,” said the official. “There seems to be something about that model that seems odd. The race has tightened the way that we thought it would tighten, but we do not see anything that would suggest [the new tracking poll] is right.”

Democrats also dispute the findings of several polls since Friday that the letter from the FBI director, James Comey, saying his staff were examining emails that may be related to the previous investigation into Clinton’s private email server has had a negative marginal affect on voter enthusiasm for the Democratic candidate.

“We do not see any evidence that the Comey story has had an impact,” said the aide. “We’ve seen anecdotal evidence about turnout and our voter registering, volunteer numbers, etc, that suggests that if anything it has encouraged our supporters.”

US magazine claims Prince Harry has already introduced Meghan Markle to Prince Charles 'and engagement is a possibility'

Prince Harry is said to be so serious about his US television star 'girlfriend' Meghan Markle that he has already introduced her to his father.

Sources suggest the Prince, 32, is also considering getting engaged to the actress after just two months of 'dating' and that he has taken her to see Prince Charles.

It comes after Markle posted a romantic picture of two bananas 'spooning' after news of their relationship broke

US magazine People made the claim and said a friend of the couple said thing were now 'pretty serious'.

The source told the magazine: 'That [marriage] is certainly a possibility. It is certainly one possible outcome. It’s pretty serious, so we will see.

'Harry is pretty serious about her and she is pretty serious about him.'

Another source told People: 'It’s great. They have a lot in common and I’m sure they will get on very well.'  

A 'besotted' Harry, 32, met the actress at a charity event and sent her messages until she said she would meet up with him - and, following a number of dates the pair are now said to be 'serious' about one another. 

But it has emerged that Meghan may have still been with her ex-boyfriend of two years, Canadian chef Cory Vitiello, when she first met Harry and he began pursuing her.

A friend said: 'They are the real deal. He definitely pursued her and besieged her with texts until she agreed to a date.' 

'He is very full-on but she was going through quite a tough time with her previous boyfriend and she was very flattered. 

One killed in RAF base training exercise, police confirm

One person has died in a training exercise at RAF Tain bombing range, 30 miles north of Inverness.

Police said there were no other casualties, but the range remains sealed off and the person's next of kin have been informed.

A police spokesman said an investigation will be launched but it was a "contained incident" and there was no threat to the public.

An Army spokeswoman confirmed that officials were handling the incident.

She said: "We are aware of an incident at the Tain base, near Inverness.

"We will release more information as and when it becomes available. It would be inappropriate for us to comment further at this point."

Emergency services were called to the defence facility at about 17:55 GMT on Tuesday.

Police Scotland said it was leading the investigation to establish the full circumstances of the incident and was working closely with the armed forces.

RAF Tain is a long established, large air weapons range on the Dornoch Firth, about three miles east of the town of Tain.

It is used for the majority of the time by the RAF - in particular Tornado and Typhoon fast jets that operate out of RAF Lossiemouth in Moray - and the Army also uses the site, which has a rifle range and small arms range.

The US Air Force and Nato air crews use the range to fly low as the RAF aircraft do and to attack targets on the site, large parts of which are saltmarsh.

Civilian contractors work with military personnel in managing the range's control tower, targets and clearing ordnance clearance.

Bastian Schweinsteiger unlikely to make Jose Mourinho perform ultimate U-turn... but could his experience help Man United team-mate Paul Pogba?

As Bastian Schweinsteiger celebrates his return to first-team training at Manchester United, there will be many fans at Old Trafford who would like to see Jose Mourinho complete his dramatic U-turn and put the German World Cup winner back in the team.

It's hard to see Mourinho putting himself in a position where he is effectively saying he's made a massive mistake.

Nonetheless with United struggling for goals particularly from midfield there is growing evidence that it would be the right thing to do.

Schweinsteiger is after all 32 not 42, and his record of 24 international goals for Germany would be of interest to most Premier League managers.

And wouldn't the likes of Paul Pogba, whose £89million price tag weighs heavily, benefit from having a player alongside him who has won everything in the game including eight Bundesliga titles and the Champions League for Bayern.

Rewind the clock a few months. Mourinho strides into Old Trafford keen to take action that underlies the fact he's not Louis van Gaal.

Mourinho buys Zlatan Ibrahimovic, Paul Pogba, Henrikh Mkhitaryan and Eric Bailly. Mourinho creates excitement. Then, on the eve of the season, Mourinho sends Schweinsteiger – an LVG vanity signing - to train with the kids. No place in United's Champions League squad or official team photograph, the message could not have been clearer. He was finished at Old Trafford.

It was a bold, some would say unnecessary move, by Mourinho. And in some ways it's backfired.

UK must retaliate against cyber-attacks says chancellor

The UK must be able to retaliate in kind against cyber-attacks, the chancellor has said.

Philip Hammond added that hostile "foreign actors" were developing techniques that threaten the country's electrical grid and airports.

The warning came within a speech describing how the government plans to spend a previously announced £1.9bn sum on cybersecurity.

It also addressed ways to tackle cyber-scammers and defend businesses.

"If we do not have the ability to respond in cyberspace to an attack which takes down our power network - leaving us in darkness or hits our air traffic control system grounding our planes - we would be left with the impossible choice of turning the other cheek, ignoring the devastating consequences, or resorting to a military response," Mr Hammond said as he described the National Cyber Security Strategy in London.

"That is a choice we do not want to face and a choice we do not want to leave as a legacy to our successors."

The strategy will help enlarge specialist police units that tackle organised online gangs.

In addition, some cash will also go towards education and training of cybersecurity experts.

"If we want Britain to be the best place in the world to be a tech business then it is also crucial that Britain is a safe place to do the digital business," the chancellor added.

"Trust in the internet and the infrastructure on which it relies is fundamental to our economic future."

Mr Hammond's speech followed a warning from MI5 that Russia poses an increased cyber-threat.

"It is using its whole range of state organs and powers to push its foreign policy abroad in increasingly aggressive ways - involving propaganda, espionage, subversion and cyber-attacks," Andrew Parker, the domestic security agency's director general, told the Guardian.

The Kremlin has dismissed the allegation.

"Until someone produces proof, we will consider those statements unfounded and groundless," said spokesman Dmitry Peskov.

Race tightening, Clinton relies on firewall of support

WASHINGTON (AP) — Hillary Clinton is pushing her supporters to cast early ballots in battleground states, as Donald Trump tries to make up ground with intensified attacks following the FBI's renewed examination of her email practices.

As her national lead shrinks in the final week of the race, Clinton is relying on a firewall of support from women and minority voters in demographically diverse swing states. On Tuesday in rallies across Florida, she plans to hit hard at the treatment of women by Trump, who has been accused of repeatedly sexually harassing and even assaulting them.

She will be introduced by Alicia Machado, the winner of Trump's 1996 Miss Universe crown whom he has repeatedly insulted for her weight gain.

With more than 23 million ballots already cast through early voting, it's unclear whether Trump has the time or organizational capacity to improve his standing enough over the next week to win the White House.

While Clinton's newest email controversy may help Trump pick up support in older, whiter states like Ohio and Iowa, the Republican nominee still faces a narrow pathway to winning the 270 electoral votes — one that includes defending states like Arizona and Utah that Republicans have won for decades.

Even as the White House remains an uphill climb, Republicans see the email exchanges as a new opportunity to win over voters in the dozens of down-ballot races that will determine House and Senate control next year.

House Speaker Paul Ryan, who told Fox News he voted for Trump last week, warned that electing Clinton and a Democratic-controlled Congress would be "the worst of all possible things."

"For those of us who lived through the 1990s, it's sort of a feeling like deja vu," he said. "This is what life with the Clintons looks like. It's always a scandal, then there's an investigation."

Both campaigns argued Tuesday they were on the path to victory.

"We're running like we're 20 points behind," said Clinton campaign manager Robby Mook. "We are going to win this election, but it's important that every one of our supporters turns out."

"We're in great shape. We're on offense everywhere," said Trump deputy campaign manager David Bossie. "There's an enthusiasm gap for their voters." Both spoke on ABC's "Good Morning America."

Clinton's campaign has spent nearly two years developing an extensive organizing apparatus, building off the political machine that twice boosted President Barack Obama to victory. Her team has pounded the airwaves with advertising, assembled an expansive voter data file and constructed a nationwide political organization that dwarfs her opponent's.

On Tuesday, it released a new ad featuring video footage of Trump making sexist and degrading statements about women. "Anyone who does what he does is unfit to be president," reads text on the final shot of the spot, which her campaign says will run in eight battleground states.

Her team is focused on pushing voters to the polls for early voting in critical states such as Florida, Nevada and Colorado, where one-third of the expected ballots have already been cast. The Democratic presidential nominee and her allies in a dozen battleground states have more than 4,800 people knocking on doors, making phone calls and otherwise working to support her candidacy.

The New York businessman over the past year has instead depended on massive rallies and free media coverage to drive his outsider candidacy. This week, he's devoting his most valuable resource — his time — to states where polls suggest he's trailing Clinton by significant margins.

Trump had two rallies Monday in Michigan, a state that last went for a Republican presidential nominee in 1988. On Tuesday, he's scheduled to appear with running mate Mike Pence in Wisconsin, which hasn't backed a Republican for president since Ronald Reagan's re-election in 1984.

"Her election would mire our government and our country in a constitutional crisis that we cannot afford," he declared Monday in Grand Rapids, Michigan, pointing to the FBI's examination as evidence the former secretary of state might face a criminal trial as president.

Clinton, defending herself from the new FBI examination, focused Monday on battleground Ohio, a state Trump's team concedes he must win and where he shows signs of a possible victory.

"There is no case here," Clinton insisted. "Most people have decided a long time ago what they think about all this."

Mook, her campaign manager, has decried what he called a "blatant double standard" following a CNBC report that FBI Director James Comey opposed releasing details about possible Russian interference in the U.S. election because it was too close to Election Day. Comey issued a letter to congressional leaders on Friday about the FBI's new effort into Clinton's correspondence.

The AP has not confirmed the CNBC report. The FBI declined comment Monday.

Meanwhile, the ongoing mystery of Trump's tax returns arose again. The New York Times reported Monday night that in the 1990s, Trump avoided paying potentially hundreds of millions of dollars in taxes in a way even his own lawyers considered questionable, using a maneuver Congress explicitly banned in 2004. Trump spokeswoman Hope Hicks said Trump's approach was appropriate.

As for Trump's charge that a Clinton election might prompt "a constitutional crisis," the Justice Department's office of legal counsel said in 1973 that criminally prosecuting a president would unconstitutionally undermine the executive branch. A 2000 memo reached a similar conclusion. Presidents can face civil lawsuits.

___

Factorization by Mid term break method

Factorization with the help of Formula

Methods of Factorization

Prime Factorization

Men and tiger

Men alonwith lion

Tesla Shows Off SolarCity Solar Roofs for Homes

To Elon Musk it seems obvious: the future of energy is in solar.

The CEO of Tesla repeated this sentiment multiple times at a press event on Friday at Universal Studios, where he gave customers the first look at an integrated solar roofing solution that will combine Tesla and SolarCity technologies.

"[I'm] quite confident [that] over time, if it's done right, every roof will be solar," Musk said.

Surrounded on both sides by Hollywood sets, familiar to people from shows like the Desperate Housewives, Musk, along with executives from SolarCity, revealed the look of the solar roofs, which he promises will be more efficient and last longer than conventional roof tiles.

To the surprise of everyone gathered on the Universal lot, each of the four set homes had been outfitted with solar roofs, which are made up of glass tiles that are embedded with solar cells. They had been redone over the course of two weeks, and according to Musk, will probably be functional enough to run.

From the street it's hard to tell that these are solar roofs at all, since panels tend to be bulky and unsightly. However, the roofs—which will be installed by Tesla and SolarCity starting in the summer of next year—come in four different styles (Textured Glass Tile, Slate Glass Tile, Tuscan Glass Tile, and Smooth Glass Tile). They were designed, according to Musk, with aesthetics as a priority. It was important to make solar roofs as "appealing as electric cars," he said, which was one of the concerns surrounding the commercial viability of the product.

During the day, the tiles will collect sunlight and store the energy inside the Powerwall 2, the latest generation of the product, which was also on display at the event. The Powerwall is a lithium-ion battery for homes that can consume power and store it in case of emergency and when the sun isn't shining. The Powerwalls can be mounted on walls and could potentially replace generators in a few decades.

In a blog post released before the event, Tesla unveiled new details for the Powerpack 2, which will provide twice the energy density and include a more seamless integration of the batteries, power electronics, thermal management, and controls included in the grid for use in businesses.

Millions of Americans will get a new roof in a year. In a few decades, Musk hopes that 90 percent of all roofs will be equipped to capture solar power. With the combination of the Powerpack, the Powerwall, and the solar roof, Musk hopes that more people will be solar friendly than will own a Tesla electric car.

"It'll be incredibly odd to have a roof that doesn't generate energy in the future," he said.

The new roofs promise to be efficient, environmentally friendly (Musk said that he hopes the technology can in fact improve the efficiency of the solar cells), and cost-efficient. Officials didn't provide exact numbers for how long they would last, but Musk said that the solar cells are expected to last longer than the house.