NPR News

Silk is in neckties, scarves and some fancy underwear and pajamas. Before too long, it might just help keep people from getting sick with measles or polio.

Vaccines play an important role in health, but can be tricky to transport to the far corners of the world. Many vaccines and some other drugs require constant refrigeration — from the factories where they're made to the places where they're ultimately injected into people.

That's where silk comes in.

They're called the Bush tax cuts for a reason. And when they were passed in the early 2000s, most Democrats opposed them.

Cut to a decade later: President Obama is calling for a second extension in as many years of the "temporary" cuts, but it won't come without a fight from congressional Republicans.

Given the apparent role reversal, who owns the George W. Bush-era tax cuts now: Democrats or Republicans?

Nothing breeds lawsuits like uncertainty. That being the case, the Supreme Court's landmark health care ruling is almost certain to open the door to lawsuits challenging the federal government's authority.

The court ruled the federal government can't force states to participate in a major expansion of Medicaid or else risk losing existing Medicaid funds from Washington. That threat amounted to unconstitutional coercion.

The Justice Department has unsealed criminal charges against four more people it says are connected to the death of U.S. Border Patrol Agent Brian Terry, as the FBI offered a $1 million reward for information leading to the capture of the fugitives.