Unregulated day-care providers abound in Virginia

(Ryan Stone / For the Washington Post)

The Post found there were 43 child deaths in such settings in the past decade in the commonwealth.

Federal auditors examining nonprofit organization IRD

Federal auditors examining nonprofit organization IRD

International Relief and Development’s confidentiality policies and “revolving door” raise concerns.

Secret U.S. aid helps Colombia cripple rebels

Secret U.S. aid helps Colombia cripple rebels

U.S. intelligence and GPS bomb kits help Latin American nation cripple rebel forces.

For MicroTech, status as small firm meant big business

For MicroTech, status as small firm meant big business

But some former employees who worked for or closely with the firm say it had help from a larger company.

At nonprofits, millions missing with little explanation

At nonprofits, millions missing with little explanation

A Post analysis found that more than 1,000 groups have had a “significant diversion” of assets since 2008.

Homes for the Taking

Homes for the Taking

The Washington Post carries out one of the first comprehensive studies of tax lien sales in the country.

Lenders seek court actions against homeowners years after foreclosure

Lenders seek court actions against homeowners years after foreclosure

In a shock to many former owners, collectors can pursue the “underwater amount” of mortgage, plus interest.

Wealthiest in Congress prosper since recession

Wealthiest in Congress prosper since recession

CAPITOL ASSETS | A Washington Post investigation finds that lawmakers don’t get rich by merely being in Congress. Rich people who go there, though, tend to keep getting richer while they’re there.

Pentagon plans big expansion of its espionage operations overseas

Pentagon plans big expansion of its espionage operations overseas

Ambitious plan will assemble an espionage network that rivals the CIA in size, U.S. officials say.

Missions in virtual city train Pentagon’s soldier-hackers for cyberwar

Missions in virtual city train Pentagon’s soldier-hackers for cyberwar

PART SIX | “It might look to some people like a toy or game,” but program prepares government for digital attacks.

Drug firms’ influence over research grows

Drug firms’ influence over research grows

EXCLUSIVE | Even in the most respected of medical journals, pharmaceutical companies’ funding and other ties to studies open the door to bias.