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Archived news, photos and analysis from NPR's political team on the ground in Iowa and in Washington, D.C. Updated all night.

An HPV vaccine that protects against nine strains of the virus that causes cancer gets the nod from the CDC. So does a vaccine for a rare but often lethal form of meningitis.

When the moon is overhead or "underfoot," the chance of rainfall diminishes ever so slightly, a new study concludes.

Florida's highest court will hear a case that may determine the fate of some 390 death row inmates. The case comes after the U.S. Supreme Court struck down the state's death sentencing system.

After a tap of a cane on Phil's tree-trunk cage, his door was opened, and the animal emerged to proclaim an early end to winter.

Coin tosses, a squeaker of a win and, perhaps even more surprising, humility. That's what characterized Monday night's Iowa caucuses, the first votes cast in the 2016 presidential election.

New York and Minnesota are offering an inexpensive insurance alternative allowed under the federal health law that provides some low-income people with more affordable coverage.

Researchers tested whether loosening restrictions on the work schedules of doctors in training would lead to more harm to patients.

After Monday night's caucuses in Iowa, the presidential candidates are turning their attention to New Hampshire. NPR's Asma Khalid tells David Greene the vote on both sides will be close.

Congressional investigators have pried loose emails showing how the company's executives anticipated huge profits from a 5,000 percent drug price increase. They were blindsided by the blowback.