There's a lot we still need to know about the strategic decisions that led authorities to shut down Boston for a manhunt.
If a major tsunami were to occur off the Atlantic coast, cities from New England to New Jersey could be hardest hit.
People around Boston didn't stay inside Friday because the city forced them to. And this distinction matters.
Boston lifts its "shelter in place" order with the remaining suspect still at large.
The estimates at this early stage vary widely.
The city conducted vivid, citywide disaster simulations in 2011 and 2012.
29 percent of the city's population is foreign born.
Boston area residents are holding their breath.
Much of last night's action took place in Cambridge and Watertown, a western suburb of Boston.
Boston area residents and business owners are being asked to "shelter in place" during this morning's manhunt. But what does that look like?
All transit has been suspended; residents urged to remain in their homes. Police are conducting a door-to-door manhunt for second bombing suspect.
Makeshift memorials from around the city.
There are millions of men and women wandering around America who spent the best years of their lives in this city.
Notes of sympathy from Kabul, Afghanistan.
Shortly after Monday's bombings, cellular networks collapsed. The same thing happens every time there is a crisis in a large city.
Done right, they might enable "meaningful social interaction" between a neighborhood's new arrivals and its existing residents.
The bombings have turned all the cues and surroundings of this time of year upside down.
The city of Boston is blanketed with security cameras. But finding the right shots is a little like looking for a needle in a hay stack.
Participants in the 2013 Boston Marathon hailed from across the globe.