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With theme of unity, Walsh takes over as Boston’s mayor

Mayor Martin J. Walsh left the stage at Boston College’s Conte Forum after an inauguration ceremony marked by tradition and optimism Monday.

JESSICA RINALDI FOR THE GLOBE

Martin Walsh took the oath of office Monday as Boston’s 48th mayor, vowing a new era of progress and collaboration.

Joe Dillon, a Boston municipal employee, watched the inauguration of Martin J. Walsh at Dorchester Tire Service on Monday. City residents said they want the new mayor to be aggressive with plans to reduce crime and spur job growth.

With new mayor, Boston residents optimistic

Across the city, many said they were optimistic Martin Walsh would prove to be a worthy successor to Thomas Menino — at least in time.

Analysis

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2014/01/07/BostonGlobe.com/Metro/Images/walsh150-7909.jpg Walsh signals new way of doing business

Mayor Martin Walsh’s inaugural address focused more on establishing distance from the Menino record than building on it.

Australian paramedic Emily Jackson checked on train schedules during her wait at Logan.

PAT GREENHOUSE/GLOBE STAFF

Weather, precautions leave Logan, other airports clogged

A combination of snow, ice, fog, and new rules brought the national air transportation system to its knees Monday.

The Nation

Justices halt gay marriages in Utah until appeal closed

By Adam Liptak

The terse order, from the full Supreme Court, issued a stay of an appeal to the federal appeals court in Denver. It offered no reasoning.

Benefits vote to kick off ’14 showdown

Senators Bob Corker, a Tennessee Republican, Sheldon Whitehouse, a Rhode Island Democrat, and Chris Murphy, a Connecticut Democrat, arrived at the Capitol for a test vote on an unemployment bill that was postponed until Tuesday.

By David Espo

The Senate plunged into an election-year session that promises to be long on political maneuvering and less so on accomplishment.

Perilous cold pushes across the nation

Bill Brasche braved the subzero temperatures and bitter wind chills to clear out his driveway in Springfield, Ill.

By Steve Karnowski

The coldest, most dangerous blast of polar air in decades gripped the Midwest and pushed toward the East and South on Monday.

The World

Sunni revolt raises specter of new war in Iraq

Mohammed Layth Ahmed wept over the coffin of his father, Layth, a soldier who was killed during clashes in Ramadi. His funeral was held in Najaf on Monday.

By Liz Sly

An eruption of violence is threatening to undo much of what US troops appeared to have accomplished before they withdrew.

Fighting among Syrian rebels intensifies

A Syrian rebel guarded a street on Monday to prevent members of the Islamic State of Iraq and the Levant, a group of rebels that is affiliated with Al Qaeda, from entering Jabal al-Zawiya in Idlib in western Syria.

By Ryan Lucas

Clashes between rival factions in the country’s northern provinces spread to Raqqa, the largest city controlled by the opposition.

US, Iran face common enemies in Mideast strife

By Thomas Erdbrink

The US and Iran are on the same side of a range of issues surrounding an insurgency raging across the Middle East.

Editorial & Opinion

TOM KEANE

An experimental state

Medicine Man marijuana store employee David Marlow helps a customer at the crowded sales counter on the store’s opening day Jan. 1 in Denver.

By Tom Keane

Colorado is a laboratory of democracy, and its marijuana experiment could teach us a lot.

farah stockman

Can investors do more good than donors?

By Farah Stockman

Private enterprise, through “impact investing,” can help the poor as much as charities can.

PAUL MCMORROW

Sullivan Square’s success will depend on the Orange Line

By Paul McMorrow

Bad planning broke Sullivan Square, and good planning can fix it, but the T isn’t ready for big development at that location.

Metro

With new mayor, Boston residents optimistic

Joe Dillon, a Boston municipal employee, watched the inauguration of Martin J. Walsh at Dorchester Tire Service on Monday. City residents said they want the new mayor to be aggressive with plans to reduce crime and spur job growth.

By Peter Schworm and Meghan E. Irons

Across the city, many said they were optimistic Martin Walsh would prove to be a worthy successor to Thomas Menino — at least in time.

With theme of unity, Walsh takes over as Boston’s mayor

Mayor Martin J. Walsh left the stage at Boston College’s Conte Forum after an inauguration ceremony marked by tradition and optimism Monday.

By Andrew Ryan

Martin Walsh took the oath of office Monday as Boston’s 48th mayor, vowing a new era of progress and collaboration.

Analysis

Walsh signals new way of doing business

Martin Walsh spoke at Conte Forum at Boston College after he was sworn in as mayor.

By Jim O’Sullivan

Mayor Martin Walsh’s inaugural address focused more on establishing distance from the Menino record than building on it.

More Stories

Kevin Cullen

Boston’s new mayor making important links

By Kevin Cullen

Business

Weather, precautions leave Logan, other airports clogged

Australian paramedic Emily Jackson checked on train schedules during her wait at Logan.

By Katie Johnston

A combination of snow, ice, fog, and new rules brought the national air transportation system to its knees Monday.

100-year-old Fed has first woman chief

Janet L. Yellen will be the first Democratic nominee to run the Fed since President Jimmy Carter named Paul Volcker as chairman in 1979.

By Annie Lowrey

The Senate confirmed Janet Yellen as the chairwoman of the Federal Reserve on Monday.

At CES 2014, next great gadget?

The LG G Flex phone is being featured at CES, the nation’s largest consumer electronics show.

By Hiawatha Bray

If there’s another high-tech craze on the horizon, CES would be a good place to spot it, but so far, there’s no sign of “that next phase of innovation.”

Sports

Dan Shaughnessy

Colts won’t be a challenge for the Patriots

Colts QB Andrew Luck and coach Chuck Pagano will be coming to Foxborough on Saturday to play the Patriots.

By Dan Shaughnessy

The Colts are not guaranteed to choke. But they have all the ingredients Bill Belichick loves in a playoff chump.

Patriots place Brandon Spikes on IR

Brandon Spikes, who was second on the Patriots in tackles this season, is slated to be a free agent in March.

By Shalise Manza Young

The Patriots will be without their best run-stopper for the rest of the season due to a knee injury.

Florida State 34, Auburn 31

Jameis Winston leads FSU to BCS title

Florida State’s Kelvin Benjamin catches a TD pass over Chris Davis with 13 seconds left.

By Mark Blaudschun

No. 1 Florida State had to come from behind in the final seconds to post a pulsating 34-31 victory over No. 2 Auburn.

G: Living

4,000-foot-high winter hikes? Why not.

Betsy Whitmore on Bondcliff Trail on Mount Bond in New Hampshire’s White Mountains last March.

By James Cronin

A local hiking group is united in its goal of scaling New England’s highest peaks in the region’s deadliest weather.

FRAME BY FRAME

Lucidity, loveliness in Ellsworth Kelly’s ‘Orange White’

By Sebastian Smee

It’s fun to think of this Ellsworth Kelly painting, with its clean lines and sumptuous color, hanging beside something by Mark Rothko.

Bookish | Matthew Gilbert

Shows to watch, books to read

DOWNTON ABBEY

By Matthew Gilbert

These books pair well with television shows like “Downton Abbey,” “Girls,” “Looking,” and “Shameless.”

More Stories

Book Review

‘Radiance of Tomorrow’ by Ishmael Beah

By Matthew Gilbert

Events

Boston-area to do list

By Milva DiDomizio

Names

New mayor toast of town at inauguration gala

By Mark Shanahan and Meredith Goldstein

Names

‘Girls’ fans gather at the Revere Hotel

By Mark Shanahan and Meredith Goldstein

Names

Mindy Kaling, Amy Poehler make Elle covers

By Mark Shanahan and Meredith Goldstein

Names

A ‘Moby-Dick’ game is in the cards

By Mark Shanahan and Meredith Goldstein

Names

Donnie Wahlberg has soft spot for Menino

By Mark Shanahan and Meredith Goldstein

Names

Matt Light, other athletes hit the Nitro Circus

By Mark Shanahan and Meredith Goldstein

Names

Emma Watson breaks up with her Boston guy

By Mark Shanahan and Meredith Goldstein