Yahoo buys blogging service Tumblr for $1.1b

The deal represents chief executive Marissa Mayer’s boldest move since leaving Google 10 months ago to lead Yahoo’s comeback attempt.

Karin Brandt

Innovation Economy

Software helps developers explain projects

CoUrbanize’s Web-based software allows developers to “explain their projects and the impacts they can have on the surrounding areas.”

HeyWire gives office phone a mobile makeover

The Cambridge firm has created technology that can redirect texts and photos sent to landlines to cellphones and other smart devices.

Facebook founder and CEO Mark Zuckerberg rang the opening bell of the Nasdaq stock market from Facebook’s headquarters in Menlo Park, Calif., a year ago.

A year after IPO, Facebook aims to be ad colossus

Facebook is trying to convince brand-name consumer companies that ads on a social network are as important and effective as TV spots.

Dr. Keith Flaherty has developed a formula for analyzing tumors.

Mass. General Cancer Center

MGH, AstraZeneca partner to create new drug combos

AstraZeneca will pair a Mass. General team’s tumor analysis with the company’s library of drugs to identify combinations of treatments.

For technology world, visa bill is flawed

In the political bargaining, legislation overhauling federal immigration law emerged with provisions the industry considers unappealing.

Photoshop Touch

APP SMART

Digital imagery apps to tweak your photos

Smartphone apps can manipulate photos in myriad ways. Here are a few to consider.

Mortgage loan relief slow in coming, analysis shows

Banks have paid less than half the $5.7 billion owed to troubled homeowners under nearly 30 settlements brokered by the government since 2008.

Diversity Boston

Winter 2012 edition

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Celebrating 12 people who are breaking down barriers in Boston, plus local leaders give a status check on diversity in the city and state.

Fishy business

Special Section

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2013/04/03/BostonGlobe.com/Business/Images/111012DNAtest01872222-678--90x90.jpg Fishy business

A 2011 Globe investigation found widespread seafood mislabeling at Massachusetts stores and restaurants. A 2012 follow-up found not much has changed.

Globe Investigations

Special section

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2012/06/18/BostonGlobe.com/Special/Images/magnifying_glass1500618-081--90x90.jpg Recent investigative reports

Read recent stories and ongoing investigations from the Globe’s journalists.