Transit systems falter in the cold

Single-digit temperatures early Thursday sparked a slew of delays around the region, leaving ­riders disgruntled at late arrivals and missed appointments.

Boston schools search for more space

The public school system is projecting that enrollment in preschool through the second grade will jump by nearly 1,000 students for the next school year.

Your 2023 self could really surprise you

People, young and old, routinely underestimate the amount they will change over the next 10 years, according to a study.

Biogen Idec’s ALS drug falls short in trials

The company has halted development of an experimental drug to treat the disorder known as Lou Gehrig’s disease, saying it proved ineffective in a late-stage ­clinical trial.

Employees at Lenco, an armored car manufacturer, work on SWAT trucks, popular with police departments, at its plant in Pittsfield.

Armored truck maker in middle of debate on dollars and safety

Lenco Armored Vehicles of Pittsfield is the nation’s leading maker of SWAT trucks, including two that responded to the shootings in Newtown, Conn.

Sen. Elizabeth Warren participated in a reenacted swearing-in with her husband, Bruce Mann and Vice President Joe Biden  at the Capitol.

Chip Somadevilla / Getty Images

113th Congress

Warren, Kennedy usher in new era

Senator Elizabeth Warren said she felt “the weight of history” as she prepared to be sworn in, while Representative Joseph Kennedy III continued the family legacy.

Mayor Thomas M. Menino was hospitalized for five weeks after falling ill during a trip to Italy with his wife.

An invigorated Menino back at City Hall

Back after a long hospitalization, Boston Mayor Thomas M. Menino spoke Thursday about his plans for the city and hinted at a run for reelection.

Danny Spond wears No. 13 to honor the victims at Columbine, which he attended years after the killings.

Christopher L. Gasper

Notre Dame’s Spond the embodiment of ‘comeback’

Danny Spond went from being mysteriously partially paralyzed to being a starting linebacker on a potential national title team.

Patina Miller in the American Repertory Theater’s production of “Pippin.”

Names

The ART’s ‘Pippin’ heads to Broadway

Diane Paulus’s circus-themed “Pippin” revival, which opened Thursday at the American Repertory Theater, will transfer to Broadway this spring.

Nation & World

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Movies

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Movie Review

“Zero Dark Thirty” stars Jessica Chastain as a CIA analyst obsessed with finding Osama bin Laden.

‘Zero Dark Thirty’ a brilliantly crafted drama

Kathryn Bigelow’s ground-level procedural about the hunt for Osama bin Laden is not a personal film. Rather, it’s about one person’s critical place in the larger effort.