Science and Technology

Breana Newton, a legal coordinator in Princeton, N.J., who posts regularly about books on TikTok, was one of the people who responded to Ms. Blalock’s video. “I am going to show you bookshelf wealth,” Ms. Newton, 33, says in a video of her own. “Ready?”She then gives viewers a brief tour of her home, showing books everywhere — on shelves, in overflow piles here and there, and strewed across the bed. Absent is the sense that the rooms have been staged, or that the books were bought with the consideration of how they would look on Instagram.In an interview, Ms.…

California has long championed renewable energy, but a change in the state’s policies last year has led to a sharp decline in the installation of residential rooftop solar in the state.Thousands of companies — including installers, manufacturers and distributors — are reeling from the new policy, which took effect in April and greatly reduced incentives that had encouraged homeowners to install solar panels. Since the change, sales of rooftop solar installations in California dropped as much as 85 percent in some months of 2023 from a year earlier, according to a report by Ohm Analytics, a research firm that tracks…

Listen and follow ‘Hard Fork’Apple | Spotify | Amazon | YouTubeCasey is taking his newsletter Platformer off Substack, as criticism over the company’s handling of pro-Nazi content grows. Then, The Wall Street Journal spoke with witnesses who said that Elon Musk had used LSD, cocaine, ecstasy and psychedelic mushrooms, worrying some directors and board members of his companies. And finally, how researchers found a new class of antibiotics with the help of an artificial intelligence algorithm used to win the board game Go.Today’s guests:Kirsten Grind, enterprise reporter for The Wall Street JournalFelix Wong, postdoctoral fellow at M.I.T. and co-founder of…

Federal regulators on Wednesday approved a new financial product that tracks the price of Bitcoin, a landmark moment for the cryptocurrency industry that proponents hope will increase investment in the technology.The Securities and Exchange Commission authorized 11 applications to offer exchange-traded funds tied to Bitcoin, a potentially simpler way for people to invest in digital assets. Some of the largest financial firms in the world, including the asset managers BlackRock and Fidelity, were approved to offer the products, known as E.T.F.s, which could begin trading as soon as Thursday on traditional platforms like the Nasdaq.The approvals were hailed as a…

A U.S. congressional committee has asked the Commerce Department to look into whether a giant technology company controlled by the ruling family of the United Arab Emirates should be put under trade restrictions because of its ties to China.The company, G42, specializes in artificial intelligence and other emerging technologies, and is overseen by Sheikh Tahnoon bin Zayed, the national security adviser of the Emirates and a younger brother of the country’s ruler.It has signed recent agreements with prominent American technology companies, including Microsoft, Dell and OpenAI. A Silicon Valley chip firm, Cerebras, is building a supercomputer for G42 to create…

This time of year, everyone asks what you like least about your life, but they phrase it as, “What’s your New Year’s resolution?”My biggest regret of 2023 was my relationship to my smartphone, or my “tech appendage” as I’ve named it in my iPhone settings. My Apple Screen Time reports regularly clocked in at more than five hours a day.That’s only an hour more than the average American, but I still found it staggering to think that I spent the equivalent of January, February and half of March looking at that tiny screen (April too, if we only count waking…