Threads, a text-based app built by Meta to rival Twitter, is live.

The app, billed as the text version of Meta's photo-sharing platform Instagram, became available Wednesday night to users in more than 100 countries — including the U.S., Britain, Australia, Canada and Japan. Despite some early glitches, 30 million people had signed up before noon on Thursday, Meta CEO Mark Zuckerberg said on Threads.

More than 10 million people have signed up to Threads, Meta's rival to Twitter, within the first few hours of its launch, the Facebook parent's CEO Mark Zuckerberg said Thursday.

Threads is the biggest challenger yet to Elon Musk-owned Twitter, which has seen a series of potential competitors emerge but not yet replace one of social media's most iconic companies, despite its epic struggles.

Meta is poised to unveil a new app that appears to mimic Twitter — a direct challenge to the social media platform owned by Elon Musk.

A listing for the app, called Threads, appeared on Apple's App Store, indicating it would debut as early as Thursday. It is billed as a "text-based conversation app" that is linked to Instagram, with the listing teasing a Twitter-like microblogging experience.

The U.N. Security Council will hold a first-ever meeting on the potential threats of artificial intelligence to international peace and security, organized by the United Kingdom which sees tremendous potential but also major risks about AI's possible use for example in autonomous weapons or in control of nuclear weapons.

UK Ambassador Barbara Woodward on Monday announced the July 18 meeting as the centerpiece of its presidency of the council this month. It will include briefings by international AI experts and Secretary-General Antonio Guterres, who last month called the alarm bells over the most advanced form of AI "deafening," and loudest from its developers.

China has imposed export curbs on two metals used in computer chips and solar cells, expanding a squabble with Washington over high-tech trade ahead of Treasury Secretary Janet Yellen's visit to Beijing this week.

The controls on gallium and germanium are intended to "safeguard national security," the Commerce Ministry said late Monday. It said exports will require official permission once the rules take effect Aug. 1 but did not say what restrictions might be applied.

Tesla's second-quarter deliveries rose 83% from a year ago after the company cut prices several times on its four electric vehicle models and buyers took advantage of U.S. government tax credits.

The Austin, Texas, producer of EV, solar panels and batteries said Sunday that it sold a record 466,140 vehicles worldwide from April through June, nearly doubling the 254,695 it sold during the same period a year earlier. The vast majority of the sales were Tesla's popular Model 3 and Model Y versions.

Instagram and Facebook's parent company Meta is adding some new parental supervision tools and privacy features to its platforms as social media companies face increasing scrutiny over their effects on teen mental health.

But many of the features require minors — and their parents — to opt in, raising questions about how effective the measures are. Instagram, for instance, will now send a notice to teens after they have blocked someone, encouraging them to let their parents "supervise" their account. The idea is to grab kids' attention when they might be more open to parental guidance.

A top European Union official is in Silicon Valley to check whether Twitter is ready to comply with the bloc's tough new digital rulebook, a set of sweeping new standards that the world's biggest online platforms all must obey in just two months.

The hajj – the annual Islamic pilgrimage to Mecca, Saudi Arabia, which Muslims are expected to make once in their lives if they are able – is expected to begin June 26 and last for five days. In 2023, approximately 2 million pilgrims will participate, close to the annual numbers of pilgrims in years before the COVID-19 pandemic.

Their visits, like those in generations past, will be enhanced, and even made possible, by modern technology.

Australia's online safety watchdog has issued a legal notice to Twitter demanding an explanation of what the social media giant is doing to tackle a surge in online hate since Tesla CEO Elon Musk bought the platform.

Australia's eSafety Commission describes itself as the world's first government agency dedicated to keeping people safer online. The agency said Thursday that it received more complaints about online hate on Twitter in the past 12 months than any other platform and had received an increasing number of reports of serious online abuse since Musk took over the company in October.