A tragic crash last summer exposed how the Massachusetts Registry had neglected to sideline dangerous drivers. But the failures at motor vehicle agencies here and across the nation run much broader and deeper than that horrific accident, according to an 11-month Globe investigation.

The Globe uncovered the hidden dangers on America’s roads, and how the government fails to protect drivers.

The seaside city was having a moment before COVID-19 hit. Revere’s revival was well underway until the pandemic wreaked health and economic havoc in a city that’s home to many immigrants and service industry workers. When and how it emerges will provide a measure of the “new” Revere’s resiliency.

As Revere attracts residential development, there are fears that the city may become unaffordable for lower-income residents.

As Revere attracts residential development, there are fears that the city may become unaffordable for lower-income residents.

Revere's main commercial district, home to dozens of immigrant-owned businesses, is a microcosm of the city's future.

Revere's main commercial district, home to dozens of immigrant-owned businesses, is a microcosm of the city's future.

The city was a thriving summertime destination for over a century.

We endure some of the nation’s worst rush hour traffic. Our aging transit system is maddeningly unreliable. It is a crisis — a very slow moving crisis — that puts our region’s economic prosperity at risk. Who is to blame? Can anything be done? The Globe Spotlight Team investigates.

The Globe retraces the virus’s devastating path, detailing early misjudgment by the public health system and a fierce battle to bring COVID-19 under control.