ERIN GRIFFITH

The disgraced founder of the blood testing start-up Theranos, who was convicted of fraud, is expected to report to a minimum-security prison in Texas.

Few are as involved in so many different artificial intelligence efforts as Mr. Hoffman, a Silicon Valley investor who co-founded LinkedIn.

Pi, an A.I. tool that debuted this week, is a twist on the new wave of chatbots: It assists people with their wellness and emotions.

Recent charges, convictions and sentences all indicate that the start-up world’s habit of playing fast and loose with the truth actually has consequences.

Two weeks after Silicon Valley Bank failed, the fallout has hit the start-up market as investors pull back further and fear has risen.

Young companies raced to get their money out of the bank, which was central to the start-up industry. Some said they could not make payroll.

As tech companies cut costs and move to remote work, their left-behind office furniture has become part of a booming trade.

Tech workers and investors are flocking to start-ups that aim to combat climate change.

Ms. Holmes was convicted in January of four counts of wire fraud for deceiving investors with claims about her blood testing start-up Theranos.

Ms. Holmes, founder of the failed blood testing start-up Theranos, is scheduled to learn her fate on Friday. She faces a maximum of 20 years...