Bedtime reading on glowing screens may keep you awake

Reading on the backlit screen suppressed the sleep hormone melatonin and shifted the body’s natural sleep-wake cycle.

Matthew J. Lee/Globe Staff/File

Researchers found reading on a backlit screen suppressed the sleep hormone melatonin and shifted the body’s natural sleep-wake cycle.

British Rock and Blues legend Joe Cocker performed in Switzerland in 2002.

Singer Joe Cocker dies at 70

The Grammy-award winning singer, known for the songs “You Are So Beautiful” and “Up Where We Belong,” died of lung cancer at 70, his agent said.

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2014/12/22/BostonGlobe.com/Metro/Images/cross150-7683.jpg Diamond-encrusted cross dropped into Salvation Army kettle

A mystery donor was inspired by the generosity of a widow who donated her wedding rings earlier this month.

BetaBoston

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2014/12/22/BostonGlobe.com/Business/Images/MassChallenge-execs-580x331.jpg MassChallenge leaders resigning

Akhil Nigam, one of the founders of the startup accelerator, and Karl Büttner, its chief mentorship officer, are stepping down.

Senator Ted Cruz walks through the halls of Congress after the November mid-term election break.

Opinion | JOHN E. SUNUNU

Ted Cruz has gained attention but little else

Cruz has become the Sarah Palin of the Senate, going rogue and insisting that he’s the only one speaking truth to power.

Crux

Pope gives thinly veiled critique of Vatican officials

Speaking to the Vatican’s upper echelon, Francis urged them to reject gossip, division, and building personal empires.

Through offseason shuffling, Dustin Pedroia and David Ortiz will remain in the regular spots in the lineup.

PETER ABRAHAM | BEAT WRITER’S NOTEBOOK

Red Sox’ roster shaping up to be competitive

For now, the roster as it stands today looks fairly close to what it could be come Opening Day.

DAN SHAUGHNESSY

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2014/12/21/BostonGlobe.com/Sports/Images/shaughnessy-6898.jpg Do you feel better or worse about Patriots’ chances?

The Patriots did what was necessary to defeat the Jets, but Rex Ryan demonstrated how to attack New England.

New York City Mayor Bill de Blasio arrived to speak at the Police Athletic League Luncheon in New York on Monday.

De Blasio urges halt to protests until after funerals

New York City Mayor Bill de Blasio said debate over police tactics should be halted until the funerals are held for two slain officers.

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2014/12/22/BostonGlobe.com/National/Images/manney150-1230.jpg Ex-officer won’t face charges in fatal Milwaukee shooting

The white Milwaukee police officer was fired after he fatally shot a mentally ill black man in a downtown park in April.

Emma Sulkowicz, a senior visual arts student at Columbia University, carried a mattress in protest of the university's lack of action after she reported being raped during her sophomore year.

Andrew Burton/Getty Images

Rape accusations follow Columbia student

When the university cleared the student, the alleged victim started a campaign to call attention to campus sexual assault.

Aspen Dental to pay $1 million to settle fraud allegations

The state alleges first-time customers were forced to pay for exams and x-rays that the company said would be free.

Mark Schafer

Buzzsaw

Ten TV episodes that stood out in 2014

When an episode rewards the scrutiny, it’s a thrill. Here are 10 of Matthew Gilbert’s favorites of the year.

Opinion

James Carroll

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2014/12/21/BostonGlobe.com/EditorialOpinion/Images/james_carroll_150px.png CIA’s poisonous legacy starts with us

American officials, and the American people, know very well what the CIA is, and what it does.

The Big Picture

Jewel Samad/AFP/Getty Images

2014 Year in Pictures: Part III

Photos from the last four months of 2014 depicting news events and daily life around the world.