Science and Technology

The conclusion of an investigation into the chaotic firing of Sam Altman from OpenAI more than three months ago represented a resounding victory for the high-profile chief executive as he moves to reassert control of the artificial intelligence company he helped to create.OpenAI, in a news conference on Friday, said that Mr. Altman, who returned to OpenAI just five days after he was pushed out in November, did not do anything that justified his removal and would regain the one role at the company that still eluded him: a seat on the company’s board of directors.Mr. Altman’s ouster stunned Silicon…

More than three months after OpenAI’s board of directors briefly ousted Sam Altman, the chief executive of the high-profile artificial intelligence company, questions remain about exactly what led the board to make such a dramatic move.A report from an outside law firm, which is expected in the coming days, could shed more light on the board’s decision as well as the chaotic five days before Mr. Altman returned to the company.But as anticipation for the report grows, previously unreported details are emerging about the role that Mira Murati, OpenAI’s chief technology officer, played in the ouster of Mr. Altman.Ms. Murati…

John Walker, a groundbreaking, if reclusive, technology entrepreneur and polymath who was a founder and chief executive of Autodesk, the company that brought the ubiquitous AutoCAD software program to the design and architecture masses, died on Feb. 2 in Neuchâtel, Switzerland. He was 74.His death, in a hospital, was caused by complications of head injuries he suffered in a fall at home, his wife, Roxie Walker, said. His death was not widely reported at the time.Mr. Walker was well known in tech circles, not just for his triumphs in business but also for his outsize skills as a programmer —…

Bitcoin hit a record high of about $68,800 on Tuesday, capping a remarkable comeback for the volatile cryptocurrency after its value plunged in 2022 amid a market meltdown.Bitcoin’s price has risen more than 300 percent since November 2022, a resurgence that few predicted when the price dropped below $20,000 in 2022. Its previous record was just under $68,790 in November 2021, as crypto markets boomed and amateur investors poured savings into experimental digital coins.“This is just the beginning of this bull market,” said Nathan McCauley, the chief executive of the crypto company Anchorage Digital. “The best is yet to come.”Bitcoin’s…