Science and Technology

Efforts to fight global warming could suffer a setback next year when new rules reduce the number of electric cars that qualify for a federal tax credit.The credits, up to $7,500 a vehicle, have helped make electric cars more affordable, bringing the cost of some models below $30,000. Next year, for the first time, dealers will be able to give buyers the credit when they purchase a car, rather than telling them to claim it on their tax returns.But qualifying for the subsidy will become more difficult on Jan. 1 because of Biden administration rules intended to encourage automakers to…

In addition to Shopify, chatbots have come out over the past 12 months from Instacart, the delivery company; Mercari, a resale platform; Carrefour, a retailer; and Kering, which owns Gucci and Balenciaga. Walmart, Mastercard and Signet Jewelers are also testing chatbots, which may become publicly available as soon as next year.“In a way, it’s recreating an in-store environment, but online,” said Carl Rivera, a vice president at Shopify who oversees its Shop app, which hosts Shop A.I. He said the chatbot broke down people’s questions into key terms and searched relevant products from Shopify’s millions of sellers. It then recommends…

Crisis as OpportunityIn Amsterdam, Mr. Brown described Praxis as his response to being trapped inside his apartment during Covid, mixed with his longstanding interest in colonial America. “Ready to join America in 1776?” reads a company pitch deck.In 2022, Mr. Brown had been more specific about his motivation to build a city from scratch, telling a speechwriter that he got the idea for Praxis after witnessing looters break shop windows in SoHo during the protests that followed the murder of George Floyd.(Mr. Brown gave detailed biographical information to the speechwriter, Webster Stone, during hours of recorded meetings in 2022, of…

Dr. Stephenie Lucas Oney is 75, but she still turns to her father for advice. How did he deal with racism, she wonders. How did he succeed when the odds were stacked against him?The answers are rooted in William Lucas’s experience as a Black man from Harlem who made his living as a police officer, F.B.I. agent and judge. But Dr. Oney doesn’t receive the guidance in person. Her father has been dead for more than a year.Instead, she listens to the answers, delivered in her father’s voice, on her phone through HereAfter AI, an app powered by artificial intelligence…