Baltimore’s Billion-Dollar Plans to Reinvent Itself

The city’s population is growing, and homicide rates are at a 50-year low. Local officials are trying to seize on the momentum with redevelopment projects — but not without pushback.

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Now Arriving, a New Theory of In-Flight Turbulence

Physicists have devised a new model to account for the discomfort that airline passengers know all too well.

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They Put Off Getting in Relationships Until They Earned Enough Money

Money can’t buy love, but it can help single people feel more ready to find it.

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Overlooked No More: Polina Gelman: Fearless ‘Night Witch’ Who Haunted Nazi Troops

She was a navigator with an all-female unit of Soviet aviators who attacked German troops at night, whooshing in wooden planes like witches on broomsticks.

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Do I Really Need an Air Purifier?

We asked the experts how to decide.

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Can A.I. Quicken the Pace of Math Discoveries?

Breakthroughs in pure mathematics can take decades. A new Defense Department initiative aims to speed things up using artificial intelligence.

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When College Graduates Throw Away Expensive Things, Scavengers Dive In

For local scavengers, graduation season is a great time to salvage expensive household items and luxury goods abandoned by departing students.

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Interior Department Weighs Less Conservation, More Extraction

A leaked version of the department’s five-year strategic planning document favors privatization and economic returns from the nation’s public lands.

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Maryland Mental Hospital With Painful History to Rebuild

The former Hospital for the Negro Insane of Maryland was once the state’s most crowded psychiatric institution. Pulling off a plan to redevelop it won’t be easy.

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Why Young Investors Are Not Worried About Stock Market Swings

While retirees and others fretted about their portfolios, some members of Gen Z and younger millennials kept calm and bought the dip.

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