When Yahoo bought Tumblr for $1.1 billion this week, David Karp, Tumblr's 26-year-old founder, became an instant celebrity -- and joined the pantheon of......

The CapeFlyer, the MBTA's revival of the Boston-to-Cape-Cod rail tradition, has not yet begun service -- it will debut this afternoon at 5:12 p.m. -- but Beverly A. Scott, general manager of the MBTA, is already considering extending the service past its scheduled Labor Day closing date if it garners enough popularity.

Religious leaders are working with the governor's office to develop Thursday morning's interfaith service in memory of the Boston Marathon bombing victims.

Mohegan Sun today announced a partnership with Finard Properties, a Boston-based commercial real estate investment and development company, to build a 300,000 square foot retail development as part of Mohegan's proposed casino resort in Palmer.

The Air Force has a message for computer geeks: send us your resumes. At least that is the word from Mark Maybury, a computer scientist at the government-funded MITRE corporation in Bedford who was tapped in 2010 to serve as the chief scientist for the US Air Force. The Lowell native and Chelmsford resident, who will return from Washington to his old job this summer, says the Pentagon is struggling to maintain its technological edge in the realm of cyberspace. And a primary reason is a lack of new talent. "If you told me I want you to hire 1,000 cyber guys tomorrow, I'd count up all my friends and might have 60 or if really lucky might find 100," he explained. "But 1,000?"

A soft-spoken, virtually unknown mathematician from the University of New Hampshire has found himself overnight a minor celebrity, flooded with requests to give talks at top universities as his work is debated and celebrated online by leaders in his field.

One of Boston's highest-profile energy entrepreneurs, Christina Lampe-Onnerud, is moving to Connecticut to join one of the world's biggest hedge fund managers, Bridgewater Associates. Lampe-Onnerud is a former Arthur D. Little scientist who in 2004 founded Boston-Power, a maker of lithium ion batteries for laptops and electric vehicles. The company attracted customers like HP and Saab. But Lampe-Onnerud dialed down her involvement with the company in 2012, after it raised a big new funding round and shifted much of its operations to China....