Lowell blaze began as electrical fire, officials say

Investigators believe the building?s alarm system was up to code, ?properly maintained and inspected.?

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2014/07/15/BostonGlobe.com/Metro/Images/Capture-13340.JPG Tornado warning canceled; severe storms still threaten

Forecasters said gusty damaging winds and heavy rain remain likely.

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2014/07/15/BostonGlobe.com/Foreign/Images/04317011.jpg Israel resumes heavy bombardment of Gaza

Israel warned that Hamas ?would pay the price? after the Islamic militant group rejected an Egyptian truce plan.

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2014/07/14/BostonGlobe.com/Metro/Images/probation-big.jpg Probation officials practiced patronage, not fraud, lawyer says

?All they did was hire qualified people for a job,? an attorney for ex-probation chief John J. O?Brien said.

Bud Selig, who turns 80 this month, is expected to step down as Major League Baseball?s commissioner following this season. (AP Photo/Paul Sancya)

Paul Sancya/AP

DAN SHAUGHNESSY

Bud Selig leaving a complicated legacy

Selig, who met the media at length Tuesday, is taking a victory lap at the 85th All-Star Game.

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2014/07/15/BostonGlobe.com/Sports/Images/48b6b05b12994443a3edfad1711e08b9-48b6b05b12994443a3edfad1711e08b9-0.jpg Former Celtic Kris Humphries signs with Wizards

The Washington Wizards have signed the former Celtics forward to a three-year, $13 million deal.

Haystack, launched in Baltimore in May, is expanding to Boston this week with what its 24-year-old founder calls a convenient solution to one of urban living?s great frustrations.

Boston mayor sharply rebukes Haystack parking app

Boston officials have escalated their rhetoric opposing a new app that lets drivers trade public parking spaces for cash.

Senator Elizabeth Warren.

Group launches website urging Warren to run for president

The fledgling effort is another sign that liberal activists will continue to float a possible campaign by Elizabeth Warren.

Opinion

The Podium

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2014/04/04/BostonGlobe.com/Sports/Images/C58C7459.jpg Scrap the cap on reselling Red Sox tickets

Price caps fail to protect consumers, make secondary markets less efficient, and label far too many people criminals.

Books

Book Review

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2013/09/27/BostonGlobe.com/Sports/Images/05092010_09johnbase.7-7590325.jpg ?Miracle at Fenway? by Saul Wisnia

Saul Wisnia?s latest book is a fresh take on the merry band that many will always hold as curse-breakers.

Sports

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All-Star notebook

It?s up to John Farrell to decide how to honor Derek Jeter during Tuesday night?s All-Star Game.

John Farrell must find way to send off Derek Jeter

Farrell, managing the AL team, will be in a unique spot for a Red Sox manager in determining how to pay homage to a Yankees star.