Twitter shares tumbled Monday on concerns the social media’s efforts to crack down on fake accounts would affect its user base, and potentially its finances.

At 1810 GMT, shares of the social media company were down 6.0 percent at $43.89 after earlier shedding almost 10 percent.

The decline follows a report late Friday in the Washington Post that described how Twitter’s greater scrutiny of user data had resulted in more than 70 million account suspensions in May and June.

The efforts are a response to criticism that social media companies have done too little to confront the spread of disinformation and fake news.

CFRA analyst Scott Kessler on Monday downgraded Twitter to “sell” from “hold,” citing the Washington Post article, which raised concerns about its official active user count and “about potential negative impacts on pricing and revenue.”

Twitter shares are “overvalued,” Kessler added.

Shares of the company rallied somewhat from session lows after chief financial officer Ned Segal said most of the accounts removed were not in the company’s official metrics since they were not on the platform for at least 30 days.

He said the company would provide user numbers when it reports earnings on July 27.

“This article reflects us getting better at improving the health of the service,” Segal said in a post that included the Post article. “Look forward to talking more on our earnings call July 27!”

The impact on Twitter’s user base was unclear. Twitter said last week it had “identified and challenged more than 9.9 million potentially spammy or automated accounts per week,” up from 6.4 million in December 2017.
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Some students in Virginia who play the guitar are also learning how to build them. It’s part of an after-school program where middle and high school students learn about science and music through the design and function of an electric guitar. The workshops, sponsored by the nonprofit Music for Life, are free for those who cannot afford to participate. VOA’s Deborah Block takes us to a high school in Manassas, Virginia, where the students are learning the challenges of making an electric guitar.
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While the Trump administration is putting tariffs on Chinese imports, another battle has been brewing about whether the United States should block Chinese investments in some U.S. companies that work in artificial intelligence (AI), robotics and other key technology.

Some of these technologies have U.S. national security implications, argues the Department of Defense in a report on growing Chinese ties to U.S. firms. Lawmakers in Washington are considering expanding a Treasury Department review process that looks at investments from foreign entities.

“I assure you that the threat China poses is real and that the dangers we worry about are already taking effect,” said Sen. John Cornyn, a Texan Republican, who is sponsoring the Foreign Investment Risk Review Modernization Act, the bill that would strengthen the review.  “Our inaction can only have negative consequences, and we need to aim to prevent any future negative consequences to our country.”

Limiting Chinese investments has to be done thoughtfully, said Jeff Moon, an international trade and government affairs consultant and a former assistant U.S. trade representative.

“The biggest problem I see is just vagueness when we talk about Chinese investment,” Moon said. “Are we talking about any Chinese national that’s dropping a penny into the American economy?”

View from Silicon Valley

In Silicon Valley, there is some relief the Trump administration appears to have backed away from a plan to block investment into AI or other technologies in the United States by a company with more than 25 percent Chinese ownership.

While the national security concerns are legitimate, tech firms and investors don’t want to see “policies that take some kind of a sledgehammer approach to investment, which by and large from China here has been beneficial,” said Sean Randolph, senior director of the Bay Area Council Economic Institute.

“How concerned should we be about these different sources of leakage, if that’s the term,” Randolph said. “What is an appropriate way to address that as opposed to ways that would try to address it, but that actually end up having a very negative effect on the economy here and in the U.S. economy, and the Chinese economy, too?”

Collaboration valued

Recently, Silicon Valley held its first U.S.-China summit on AI technologies with a focus on how to better collaborate between the two nations.

“The technology is shared and collaborative and better for humankind. I don’t think it’s one country against another country,” said Tao Wang of SAIC Capital.

Helen Liang, managing partner of FoundersX, a venture capital firm, said entrepreneurs and companies in AI are focused on how to tackle big issues, such as health care, transportation and work.

“Regardless of the geopolitical pressure or differences, from a technology perspective we are looking to solve society’s problems,” said Liang, whose firm helps startups it invests in with business relationships in China.  

‘Disruption’ from both countries

Nicolas Miailhe, president of The Future Society, a nonprofit research group, said any limits on investment from China to the United States could also slow down U.S. innovation.

“We have been used to disruptive business models emerging from the Silicon Valley here. This is changing,” Miailhe said. “We are now in FinTech for example seeing new and disruptive business models emerging from China.”

“Disruption” is a favorite term in Silicon Valley, describing how new technologies can lead to dramatic and unpredictable results on an industry.

That potential is what excites these entrepreneurs – and worries some lawmakers back in Washington.

 
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U.S. policymakers are raising national security concerns about Chinese money flooding into U.S. startups in fields such as artificial intelligence and robotics. But in Silicon Valley, there is a sense that ties with China are mutually beneficial. Michelle Quinn reports.
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Nano technology researchers at the University of Cambridge are developing an intelligent toilet that might change the nature of medicine. It automatically analyzes a user’s urine to capture valuable medical data. VOA Correspondent Mariama Diallo reports.
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Key California lawmakers said Thursday they’ve reached an agreement on legislation to enshrine net neutrality provisions in state law after the Federal Communications Commission dumped rules requiring an equal playing field on the internet.

California’s bill is one of the nation’s most aggressive efforts to continue net neutrality, and the deal comes after a bitter fight among Democrats over how far the state should go.

Democratic Sen. Scott Wiener, who repudiated his own legislation when major pieces were removed two weeks ago, said those provisions have been restored under his agreement with Democratic Assemblyman Miguel Santiago.

“We need to ensure the internet is an open field where everyone has access, the companies that are providing internet access are not picking winners and losers,” Wiener told reporters at a Capitol news conference.

Santiago came under fire from net neutrality advocates around the country when the Assembly committee he leads stripped key provisions from the legislation — a decision that drew rebukes from members of Congress, including House Minority Leader Nancy Pelosi. 

Santiago became the subject of online memes and a flood of calls to his office accusing the Los Angeles lawmaker of selling out to internet providers, citing his contributions from AT&T.

Santiago portrayed net neutrality as crucial to the future of the progressive movement and called on other liberal states to follow suit.

“There’s a lot of blue states in the country,” Santiago said. “We expect them to stand up and join us in this fight and pass measures that are equally as strong.”

Internet companies say it’s not practical for them to comply with state-by-state internet regulations and warn that Wiener’s bill would discourage the rollout of new technology in California.

“For decades, California has benefited from American innovation and investment, but SB 822 is a flawed and consumer unfriendly approach,” CTIA, a wireless industry lobbying group, said in a statement. 

The FCC last year repealed Obama-era regulations that prevented internet companies from speeding up or slowing down the delivery of certain content. Net neutrality advocates worry that, without net neutrality rules, internet providers would be free to block political content, slow down websites from their competitors or drive consumers to their own content.

The debate in California is being closely watched by net neutrality advocates around the country, who are looking to the state to pass sweeping net neutrality provisions that could drive momentum in other states.

Wiener said the key provisions removed from his bill were restored. One would require data to be treated equally at the point where it enters an internet company’s network, not just within the company’s own infrastructure.

The other bans a practice known as “zero rating,” in which internet or cellphone providers exempt certain data from a monthly cap. Critics of the practice say zero rating encourages low monthly data caps and cuts off vast swaths of the internet for people who can’t afford higher data allotments. 

He declined to release the new bill language until lawmakers return in August from a summer break.

Under the agreement, Wiener’s bill will be linked to separate legislation by Democratic Sen. Kevin de Leon to prohibit state contracting with companies that don’t abide by net neutrality provisions.
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Republican Senator John McCain is perhaps the best known person who has brain cancer. His is a glioblastoma, the most deadly type. Since McCain announced the news last year, he has had surgery and chemotherapy. There’s no cure for this type of cancer, and even with treatment, most people don’t live longer than three years after being diagnosed.

Surgeons often can’t remove the entire tumor because it might affect brain functions, or it might be attached to the spinal column. These tumors often grow tentacles that make them impossible to cut out completely.

Untreated, people have just months to live. But even with treatment, the two-year survival rate is just 30 percent, according to the American Brain Tumor Association.

What’s hopeful is that some new treatments are showing promise.

A case in point is Lori Mines. This 40-year-old wife and mother was diagnosed with stage four brain cancer two years ago. She had a severe headache followed by a stroke. When doctors ordered a brain scan, they found two large brain tumors, one on either side of her brain. One of the tumors was attached to the spinal column so it couldn’t be completely removed. After surgery, Mines had radiation.

“I didn’t even want to know anything about it. I just basically wanted to focus on trying to get better,” she said.

Even noncancerous brain tumors can be deadly if they interfere with portions of the brain responsible for vital bodily functions. Treatment often includes surgery, chemotherapy or radiation or a combination of these treatments.

Glioblastomas are the most common type of cancerous brain tumors, and the five-year relative survival rate is less than 6 percent. 

Mines says she’s realistic, although she hopes she can live longer. She says she will just keep fighting for herself, for her husband, and for her young daughter.

“I have persisted because there’s no other option,” she said.

Scientists at Duke Health found they can increase the survival rate for some patients by injecting a modified polio virus directly into the tumor. Other researchers are trying to get the body’s immune system to attack the tumors.

Dr. Arnab Chakravarti heads the Department of Radiation Oncology at The Ohio State University where he specializes in brain cancers. Chakravarti says medical researchers are examining novel clinical trials, targeted therapies and immunotherapies.

“There’s a lot of hope for this patient population,” he said.

Chakravarti led a study on the genetic makeup of gliomas, brain tumors that can be cancerous or benign. The researchers found they could more than double the life expectancy among patients who had a distinctive biomarker, a cell or a molecule that is present with a particular type of tumor. It helps doctors decide what treatment can work best to shrink the tumor.

“It’s very important to personalize care for the individual patient and that’s why biomarkers, prognostic and predictive biomarkers are so important,” Chakravarti said. The study was published in JAMA Oncology. 

Experts say testing genetic markers will become the standard for patients with malignant brain tumors. They are also looking at targeted drug therapies as part of individualized treatment. The hope is that getting a diagnosis of brain cancer will no longer be an imminent death sentence.
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The Russian Internet company Yandex said Thursday that its public search engine has been turning up dozens of Google documents that appear meant for private use, suggesting there may have been a data breach.

Yandex spokesman Ilya Grabovsky said that some Internet users contacted the company Wednesday to say that its public search engine was yielding what looked like personal Google files.

Russian social media users started posting scores of such documents, including an internal memo from a Russian bank, press summaries and company business plans.

Grabovsky said Yandex has alerted Google to the concerns.

It was unclear whether the files were meant to be publicly viewable by their authors and how many there were. Google did not comment.

Grabovsky said that a Yandex search only yields files that don’t require logins or passwords. He added that the files were also turning up in other search engines.
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Scientists have developed a way to harvest water from dry desert air and the only power the device needs is sunlight. It could be useful in an increasingly water-stressed world. VOA’s Steve Baragona has more.
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Orthopedic surgery can be tricky. So, researchers at Northwestern University are engineering new materials to make 3D printed bones that are a perfect match, ready for grafts. Faith Lapidus reports.
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Sophia, one of the world’s most advanced and perhaps most famous artificial intelligence (AI) humanoid robot, was a big hit at this year’s Information & Communication Technology International Expo in Addis Ababa, Ethiopia. Visitors, including various dignitaries, were excited to meet the life-like AI robot as she communicated with expo guests and expressed a wide range of facial expressions. As VOA’s Mariama Diallo reports, Sophia has become an international sensation.
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When a CIA-backed venture capital fund took an interest in Rana el Kaliouby’s face-scanning technology for detecting emotions, the computer scientist and her colleagues did some soul-searching — and then turned down the money.

“We’re not interested in applications where you’re spying on people,” said el Kaliouby, the CEO and co-founder of the Boston startup Affectiva. The company has trained its artificial intelligence systems to recognize if individuals are happy or sad, tired or angry, using a photographic repository of more than 6 million faces.

Recent advances in AI-powered computer vision have accelerated the race for self-driving cars and powered the increasingly sophisticated photo-tagging features found on Facebook and Google. But as these prying AI “eyes” find new applications in store checkout lines, police body cameras and war zones, the tech companies developing them are struggling to balance business opportunities with difficult moral decisions that could turn off customers or their own workers.

El Kaliouby said it’s not hard to imagine using real-time face recognition to pick up on dishonesty — or, in the hands of an authoritarian regime, to monitor reaction to political speech in order to root out dissent. But the small firm, which spun off from a Massachusetts Institute of Technology research lab, has set limits on what it will do.

The company has shunned “any security, airport, even lie-detection stuff,” el Kaliouby said. Instead, Affectiva has partnered with automakers trying to help tired-looking drivers stay awake, and with consumer brands that want to know whether people respond to a product with joy or disgust. 

New qualms

Such queasiness reflects new qualms about the capabilities and possible abuses of all-seeing, always-watching AI camera systems — even as authorities are growing more eager to use them.

In the immediate aftermath of Thursday’s deadly shooting at a newspaper in Annapolis, Maryland, police said they turned to face recognition to identify the uncooperative suspect. They did so by tapping a state database that includes mug shots of past arrestees and, more controversially, everyone who registered for a Maryland driver’s license.

Initial information given to law enforcement authorities said that police had turned to facial recognition because the suspect had damaged his fingerprints in an apparent attempt to avoid identification. That report turned out to be incorrect and police said they used facial recognition because of delays in getting fingerprint identification.

In June, Orlando International Airport announced plans to require face-identification scans of passengers on all arriving and departing international flights by the end of this year. Several other U.S. airports have already been using such scans for some departing international flights.

Chinese firms and municipalities are already using intelligent cameras to shame jaywalkers in real time and to surveil ethnic minorities, subjecting some to detention and political indoctrination. Closer to home, the overhead cameras and sensors in Amazon’s new cashier-less store in Seattle aim to make shoplifting obsolete by tracking every item shoppers pick up and put back down.

Concerns over the technology can shake even the largest tech firms. Google, for instance, recently said it will exit a defense contract after employees protested the military application of the company’s AI technology. The work involved computer analysis of drone video footage from Iraq and other conflict zones.

Google guidelines

Similar concerns about government contracts have stirred up internal discord at Amazon and Microsoft. Google has since published AI guidelines emphasizing uses that are “socially beneficial” and that avoid “unfair bias.”

Amazon, however, has so far deflected growing pressure from employees and privacy advocates to halt Rekognition, a powerful face-recognition tool it sells to police departments and other government agencies. 

Saying no to some work, of course, usually means someone else will do it. The drone-footage project involving Google, dubbed Project Maven, aimed to speed the job of looking for “patterns of life, things that are suspicious, indications of potential attacks,” said Robert Work, a former top Pentagon official who launched the project in 2017.

While it hurts to lose Google because they are “very, very good at it,” Work said, other companies will continue those efforts.

Commercial and government interest in computer vision has exploded since breakthroughs earlier in this decade using a brain-like “neural network” to recognize objects in images. Training computers to identify cats in YouTube videos was an early challenge in 2012. Now, Google has a smartphone app that can tell you which breed.

A major research meeting — the annual Conference on Computer Vision and Pattern Recognition, held in Salt Lake City in June — has transformed from a sleepy academic gathering of “nerdy people” to a gold rush business expo attracting big companies and government agencies, said Michael Brown, a computer scientist at Toronto’s York University and a conference organizer.

Brown said researchers have been offered high-paying jobs on the spot. But few of the thousands of technical papers submitted to the meeting address broader public concerns about privacy, bias or other ethical dilemmas. “We’re probably not having as much discussion as we should,” he said.

Not for police, government

Startups are forging their own paths. Brian Brackeen, the CEO of Miami-based facial recognition software company Kairos, has set a blanket policy against selling the technology to law enforcement or for government surveillance, arguing in a recent essay that it “opens the door for gross misconduct by the morally corrupt.”

Boston-based startup Neurala, by contrast, is building software for Motorola that will help police-worn body cameras find a person in a crowd based on what they’re wearing and what they look like. CEO Max Versace said that “AI is a mirror of the society,” so the company chooses only principled partners.

“We are not part of that totalitarian, Orwellian scheme,” he said.
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