Pro sports teams pretty much always increase in value. But our tax laws allow the owners to claim that their teams’ assets lose value, lowering their tax bills through amortization. The government misses out on billions in revenue. Here’s how.

A retirement account designed for the middle class is being exploited as a giant tax shelter — legally — by some of the wealthiest Americans. Billionaire tech mogul Peter Thiel, a Paypal co-founder, has grown his Roth IRA to more than $5 billion.

Some of the wealthiest Americans use a strategy called Buy, Borrow, Die to dramatically reduce their tax bills while their fortunes continue to grow. This video is part of ProPublica’s series, “The Secret IRS Files” which reveals, using a trove of never-before-seen records, how the wealthiest avoid income tax.

The unrelenting stress of fighting systemic racism can alter a body’s normal functioning until it starts to wear down. The theory, known as John Henryism, helps explain racial health disparities.

The climate crisis will profoundly interrupt the way we live and farm in the United States. Extreme heat, massive floods and more fires may force millions of people to move — and millions may be left behind.

In some situations, antibody tests generate more false positives than real ones. It’s because of math.

Hundreds of pages of emails show officials debating how seriously to take the spreading virus.

COVID-19 is unlike anything in our lifetime. But the president has repeatedly compared it to the H1N1 swine flu outbreak of 2009. Here's why it's different, and much more dangerous.

How soon regions run out of hospital beds depends on how fast the novel coronavirus spreads, and how many open beds they had to begin with.

There’s no government oversight of side-impact tests, so Evenflo made up its own and gave itself passing grades.

We have the texts and emails.

The IRS is underfunded and understaffed. One result: audits of the wealthy are rapidly declining.

High levees come at a high cost, often pushing water into communities that can’t afford the same protection. To demonstrate, we built a giant, scientific model of a river with levees — complete with adorable tiny houses.

When Aviva Williams’ daughter got pinworms, her doctor prescribed albendazole, a prescription treatment that has been around for decades. Williams thought little of it, until she checked the price: $724 for a four-tablet treatment.

After watching a viral video of a Jacksonville cop stopping a young black man for jaywalking, reporters Ben Conarck and Topher Sanders examine how “walking while black” can come at a high price.

New York prosecutors were preparing a case. Then the D.A. overruled his staff after a visit from a top donor.

New York City’s crime lab has been a pioneer nationally in analyzing especially difficult DNA samples. Now these DNA analysis methods are under the microscope, with scientists questioning their validity.