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Elizabeth Warren launches exploratory committee, a major step in a possible 2020 run

Senator Elizabeth Warren and her husband, Bruce, and dog, Bailey, greeted the media outside her home.

Suzanne Kreiter/Globe staff

Elizabeth Warren formally announced that she is exploring a run for the presidency in 2020, as expected.

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2018/12/31/BostonGlobe.com/ReceivedContent/Images/KREITER12312018warrenruns10.jpg Warren sticks to her talking points as she steps forward

Elizabeth Warren met with reporters outside her Cambridge home after announcing that she had taken the expected step of forming an exploratory committee.

Among the changes coming to Massachusetts in 2019 is a newly enshrined summer tax holiday.

John Blanding/Globe Staff/File 2015

How the state’s new laws in 2019 will affect you (and your wallet)

A cascade of changes awaits the average Massachusetts taxpayer in 2019, thanks to a mixture of a tax cut, a tax hike, new fees, and a slowly rising minimum wage.

Jesse Carrillo leaves the Hampshire County Superior Courthouse following his arraignment on charges of involuntary manslaughter in the death of UMass Amherst student Eric Sinacori. Mr. Carillo was released on $25,000 cash bail.photo by Barry Goldstein.

Barry Goldstein for the Boston Globe

Should drug users be treated like dealers? A fatal overdose raises that question

Jesse Carrillo’s lawyer argues that his client — an addict — should not be treated the same as drug dealers selling heroin for profit.

The Nation

Elizabeth Warren launches exploratory committee, a major step in a possible 2020 run

Senator Elizabeth Warren and her husband, Bruce, and dog, Bailey, greeted the media outside her home.

By Jess Bidgood and Liz Goodwin

Elizabeth Warren formally announced that she is exploring a run for the presidency in 2020, as expected.

Jim Mattis’s final words from Pentagon: ‘Hold fast’ with allies

By Robert Burns

He ended one of history’s more turbulent tenures as defense secretary Monday by reemphasizing a key difference with President Trump and encouraging Pentagon employees, civilian and military, to “hold fast” in safeguarding the nation.

The most distant space encounter in history is happening now

An artist’s illustration from NASA shows the New Horizons spacecraft encountering the Kuiper belt object known as Ultima Thule.

By Sarah Kaplan

The nerdiest New Year’s party in the solar system is happening 4 billion miles from Earth, where a lone, intrepid explorer is en route to the furthest object humans have ever explored.

The World

Guatemala village mourns 2d child to die in US custody

FILE - This Dec, 12, 2018, photo provided by Catarina Gomez on Thursday, Dec. 27, 2018, shows her stepbrother Felipe Gomez Alonzo, 8, near her home in Yalambojoch, Guatemala. The 8-year-old boy died in U.S. custody at a New Mexico hospital on Christmas Eve after suffering a cough, vomiting and fever, authorities said. The cause is under investigation. (Catarina Gomez via AP, File)

By Sonia Perez D.

Relatives said they had no idea that such a tragedy could occur, nor had they heard about US policies that led to thousands of migrant children being separated from their parents.

Editorial & Opinion

Michael A. Cohen

What I got wrong in 2018

Supreme court nominee Brett Kavanaugh testifies before the Senate Judiciary Committee on Capitol Hill in Washington, Thursday, Sept. 27, 2018. (AP Photo/Andrew Harnik)

By Michael A. Cohen

I’ll try to do better in 2019.

Editorial

Globe editorial board’s resolutions for Congress, Beacon Hill, City Hall, and beyond

To ring in 2019, we’ve crafted resolutions that will help us stay on top of Congress, Beacon Hill, and City Hall. As always, we invite you to be part of the debate.

Letters

A surefire test of driving while stoned

“Police officers simply need to offer an assortment of cakes, cookies, or other sweets.”

Metro

Judge denies Kevin Spacey’s request to skip Nantucket arraignment

(FILES) In this file photo taken on June 12, 2013 US actor Kevin Spacey watches as France's Nicolas Mahut plays Scotland's Andy Murray during their ATP Aegon Championships tennis match at the Queen's Club in west London. - Oscar-winning US actor Kevin Spacey is facing a felony charge for alleged sexual assault of a teenager in a bar in 2016, US media reported on December 24, 2018. (Photo by Ben STANSALL / AFP)BEN STANSALL/AFP/Getty Images

By Matt Rocheleau

The actor plans to plead not guilty to a felony charge he faces for allegedly sexually assaulting an 18-year-old man at a Nantucket bar in 2016.

How the state’s new laws in 2019 will affect you (and your wallet)

Among the changes coming to Massachusetts in 2019 is a newly enshrined summer tax holiday.

By Matt Stout

A cascade of changes awaits the average Massachusetts taxpayer in 2019, thanks to a mixture of a tax cut, a tax hike, new fees, and a slowly rising minimum wage.

NAMES

Louis C.K. mocks school shooting survivors, nonbinary people in leaked audio from new set

Louis C.K., co-creator/writer/executive producer, participates in the

By Lillian Brown

He focused especially on the survivors of the massacre at Marjory Stoneman Douglas High School in Parkland, Florida.

Business & Tech

2018 farm bill: Boom or bust for Mass. hemp?

The indoor grow facility at Terrapin Farm in Franklin.

By Christine Giraud

A bill signed last month removed hemp — the nonpsychoactive variety of cannabis — from the federal list of controlled substances.

Baker signs unemployment bill for locked-out National Grid workers

A protest by locked-out National Grid workers in Woburn this fall.

By Jon Chesto

Governor Charlie Baker signed legislation Monday that would extend unemployment insurance benefits for roughly 1,250 union workers at National Grid who have been locked out since June.

Stocks end the year with worst annual decline since 2008

The markets were troubled all year long, one analyst said. Above, traders at the New York Stock Exchange.

By Thomas Heath

Markets stage late rally but 2018 decline still worst in a decade

Obituaries

John C. Culver, 86, Iowa lawmaker, Kennedy confidant, Harvard football star

Mr. Culver spoke at the memorial service for Senator Edward Kennedy at the John F. Kennedy Presidential Library in Boston.

By Globe staff and news services

Praised across the political spectrum for his independence and willingness to take tough votes, Mr. Culver served five terms in the US House in the 1960s and early 1970s.

Bre Payton, conservative writer and Fox News commentator, dies at 26

By Mihir Zaveri

Bre Payton, a writer for a conservative online newsmagazine and a guest commentator on the Fox News Channel, died Friday in San Diego. She was 26.

Nancy Roman, ‘Mother of the Hubble’ Telescope, dies at 93

Dr. Roman showed a model of an orbiting solar observatory, years before Hubble was built.

By Richard Goldstein

When Nancy Grace Roman was 11 years old, her family was living in Reno, Nevada. She was enthralled by the stars in the clear night skies and joined with friends in forming an astronomy club.

Sports

Here are the sports dates Boston fans should know in 2019

Boston, MA: 4/5/2018: The scene during the national anthem. The Boston Red Sox hosted the Tampa Bay Rays in their 2018 MLB home Opening Day baseball game at Fenway Park. (Jim Davis/Globe Staff)

By Hayden Bird

Events include the NHL Winter Classic, Crashed Ice at Fenway, and Red Sox-Yankees in London.

HIGH SCHOOL BOYS’ BASKETBALL

To exclude or not to exclude? MIAA rule poses vexing scheduling issues

West Roxbury, MA - December 21, 2018: Catholic Memorial's Kurtis Henderson (14) left, drives to the basket against Franklin's Jalen Samuels left, and Chris Edgehill during the boys high school basketball game between Franklin and Catholic Memorial in West Roxbury, MA on December 21, 2018. (Craig F. Walker/Globe Staff) section: metro reporter:

By Josh Schafer

Meant to help small conference teams fill out their nonleague schedules, non-exclusion teams have option to not count exclusion games against their overall record.

Dolphins complete their interview with Patriots assistant Brian Flores

Foxboro- 05/22/18- The Patriots held off-season OTA's on the practice field of Gillette Stadium. Linebackers coach Brian Flores runs a drill. Photo by John Tlumacki/Globe Staff Staff(metro)

By Andrew Mahoney

Linebackers coach Brian Flores and offensive coordinator Josh McDaniels are both being considered for head coaching opportunities.

More Stories

JOE SULLIVAN | COLLEGE BASKETBALL

Checking on college basketball’s overachievers and underachievers

By Joe Sullivan

KEVIN PAUL DUPONT I ON HOCKEY

The NHL’s outdoor experience will come full-circle for Bruins’ Jake DeBrusk

By Kevin Paul Dupont

JIM McBRIDE | PATRIOTS FILM STUDY

Tom Brady certainly didn’t look hurt against the Jets

By Jim McBride

Tuesday Stories

Names

Mighty Mighty Bosstones help close out the year at House of Blues with some special guests

The Dropkick Murphys's Tim Brennan plays with the Mighty Mighty Bosstones at their 21st HomeTown ThrowDown.

By Lillian Brown

The band played its 21st Hometown Throwdown at the House of Blues Friday, Saturday, and Sunday nights.