Guardian readers in the US share concerns about how the SpaceX IPO and AI boom affect their retirement accounts

Elon Musk became the world’s first trillionaire last week after SpaceX debuted on the stock market with a valuation of $1.77tn.

Millions of Americans could soon become indirect investors in SpaceX and other emerging AI-focused companies as US markets increasingly shift toward AI-driven investments.

Apart from effort to electrify, there were geopolitical tensions around climate science and the 1.5C goal at pre-Cop31 climate talks

Electrifying the world – with electric vehicles, electric heating and cooling, and modernised heavy industry – could be the next biggest step towards phasing out fossil fuels, replacing the 80% of global energy that still comes from hydrocarbons. As using electrical energy is much more efficient than combustion, the move would save billions of dollars for consumers and businesses – global energy demand could be halved, according to one estimate.

For decades, electrification has been a nerdish backwater of global climate action. But in the last two weeks, at preparatory talks in Bonn before the forthcoming UN Cop31 climate summit, the subject finally took centre stage.

Age verification means that the sector’s biggest players will now have access to information that will only make them richer and more powerful

This week, the UK announced a wide-ranging ban on social media that will soon block users from communicating or accessing information on apps such as X, Instagram, YouTube, Facebook, TikTok and Snapchat unless they prove that they’re over the age of 16.

The prime minister, Keir Starmer, called the policy “a line in the sand”. “Tech giants had their chance and failed,” he said, “but we’re stepping in to protect children, back parents and set a new normal for future generations.” All internet users, especially children, should be protected from exploitative systems online, but this new law will only foster more harm and help the largest and most powerful tech companies consolidate power and influence over everyone’s lives.

Taylor Lorenz is a technology journalist who writes the newsletter User Mag and is the author of the bestselling book Extremely Online: The Untold Story of Fame, Influence, and Power on the Internet

Amid UK government proposals for a ban, experts discuss what other activities might really serve children well

When a Lancashire schoolgirl was asked what she would do if the proposed social media ban for under-16s came into effect, her answer hit a national nerve: “Stare at a wall,” she deadpanned.

The clip went viral, not least because it distilled a question many parents have been asking themselves about the consequences of the government’s proposed social media ban.