In 2005, the painting sold at auction for $1,000. Its most recent price? $450 million.

How pop-up tax preparers make billions off the poor.

Two Dominican families, their lawyer, and a quest for ancestral riches that may not exist.

Local communities are taking the world’s largest polluters to court. And they’re using the legal strategy that got tobacco companies to pay up.

Ten years ago, the tax agency formed a special team to unravel the complex tax-lowering strategies of the nation’s wealthiest people. It never had a chance.

When colleges shut down, people get hurt.

How proposals to change recommendations and curb conspiracies were sacrificed for engagement.

How Miami’s real estate industry turns a blind eye to climate change.

Just a few years ago, universities had a chance to make a quality education affordable for everyone. Here’s the little-known and absolutely infuriating history of what they did instead.

Cancer surgery for $700, a heart bypass for $2,000. Pretty good, but under India’s new health-care system, it’s not good enough.

Using several email addresses and a lot of exclamation points, teenager Jonathan Lebed worked finance message boards in the morning before school and made almost a million bucks. Then he made the head of the S.E.C. look like a fool.

The making of a convenience store empire.

Inside the compulsive world of airline rewards hobbyists, who spend the bulk of their lives flying around the world for free.

When Aldi arrived in Britain, Tesco and Sainsbury’s were sure they had nothing to worry about. Three decades later, they know better.

What happens when people who have trouble fitting into a traditional workplace get one designed just for them?

The secret lives of Facebook moderators in America.

Nannies and housecleaners have some of the hardest, least secure jobs in the nation. Now they’re organizing to change that.

At the end, Theranos was overrun by a dog defecating in the boardroom, nearly a dozen law firms on retainer, and a C.E.O. grinning through her teeth about an implausible turnaround.

Collusion, sabotage, violence—inside Montreal’s no-holds-barred snow removal racket.

On the cutthroat dealings of the porta-potty business.

He never saw it coming.

Why one physician took the risk of becoming an F.B.I. informant to expose alleged Medicare fraud.

Activities include: getting his own stem cells injected into his body every six months, taking 100 supplements a day, following a strict diet, bathing in infrared light, hanging out in a hyperbaric oxygen chamber, and wearing yellow-lensed glasses every time he gets on an airplane.

Millions of American workers sign away legal rights without knowing what they’re in for: Arbitration Hell.

A profile of the woman who wants to declutter the world.