Federal agency to probe cause of fatal Back Bay fire

A team of federal fire investigators will be looking for answers in the blaze that killed two Boston firefighters.

Journal raises concerns on Brigham-led stem cell research

A major medical journal has published a notice of concern about data included in a paper that found benefits for an experimental cell therapy.

Dzhokhar Tsarnaev, 20, faces a 30-count federal indictment stemming from the twin April 15, 2013, bombings.

Prosecutors ask if Tsarnaev will claim mental illness

Federal attorneys want to know if the defense plans to claim that alleged bomber Dzhokhar Tsarnaev was mentally ill.

Search warrants aren’t needed to rescue animals, SJC rules

The state’s highest court ruled that police can legally enter private property without a search warrant to rescue endangered animals.

Jun Cen

Your Home: The Guide

7 steps to a beautiful lawn

You can grow a drought-resistant, low-maintenance carpet while being kind to the environment.

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2014/04/11/BostonGlobe.com/Sports/Images/200_splotch.jpg What was on the hand of the Yankees’ Michael Pineda?

The pitcher had retired 10 of 11 Red Sox batters by the time anyone spotted a brown stain on his right hand.

Matthew George isn’t a typical tech entrepreneur. He has worked as an EMT and been a White House intern, majored in biology, and started a bus service while he was in college.

Data-driven bus service set to roll out

Bridj aims to harness online data to predict areas of peak demand on any given day and adjust its schedules accordingly.

critic’s notebook

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2014/04/11/BostonGlobe.com/Metro/Images/colbert150-12788.jpg Stephen Colbert’s genius will flourish on ‘Late Show’

The language-loving inventor of “truthiness” is a proven, fast-on-his-feet entertainer with a lot of range beyond political satire.

Opinion

SCOT LEHIGH

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2014/04/11/BostonGlobe.com/EditorialOpinion/Images/Scot_Lehigh_150px-1812.jpg Spins on the lieutenant governor job

It’s a curiosity that men and women aspire to this thoroughly pointless post.

Arts

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ART REVIEW

A 1590 field armor on display in the Knights! exhibit at the Worcester Art Museum.

Worcester Art Museum’s show of armor shines, surprises

“Knights!” — WAM’s display of its new Higgins Armory Museum holdings, is fun and it practically falls over itself to be welcoming.