Presumptive Democratic presidential nominee Hillary Clinton was in Springfield, Ill., Wednesday where she sought to use the symbolism of a historic landmark to draw parallels to a present-day America that is in need of repairing deepening racial and cultural divides.

The Old State Capitol — where Abraham Lincoln delivered his famous "A house divided" speech in 1858 warning against the ills of slavery and where Barack Obama launched his presidential bid in 2007 — served as the backdrop for Clinton as she spoke of how "America's long struggle with race is far from finished."

Episode 711: Hooked on Heroin

1 hour ago

When we meet the heroin dealer called Bone, he has just shot up. He has a lot to say anyway. He tells us about his career--it pretty much tracks the evolution of drug use in America these past ten years or so. He tells us about his rough past. And he tells us about how he died a week ago. He overdosed on his own supply and his friend took his body to the emergency room, then left.

New British Prime Minister Theresa May announced six members of her Cabinet Wednesday.

Amid a sweeping crackdown on dissent in Egypt, security forces have forcibly disappeared hundreds of people since the beginning of 2015, according to a new report from Amnesty International.

It's an "unprecedented spike," the group says, with an average of three or four people disappeared every day.

The Republican Party, as it prepares for its convention next week has checked off item No. 1 on its housekeeping list — drafting a party platform. The document reflects the conservative views of its authors, many of whom are party activists. So don't look for any concessions to changing views among the broader public on key social issues.

Many public figures who took to Twitter and Facebook following the murder of five police officers in Dallas have faced public blowback and, in some cases, found their employers less than forgiving about inflammatory and sometimes hateful online comments.

As Venezuela unravels — with shortages of food and medicine, as well as runaway inflation — President Nicolas Maduro is increasingly unpopular. But he's still holding onto power.

"The truth in Venezuela is there is real hunger. We are hungry," says a man who has invited me into his house in the northwestern city of Maracaibo, but doesn't want his name used for fear of reprisals by the government.

The wiry man paces angrily as he speaks. It wasn't always this way, he says, showing how loose his pants are now.

Ask a typical teenage girl about the latest slang and girl crushes and you might get answers like "spilling the tea" and Taylor Swift. But at the Girl Up Leadership Summit in Washington, D.C., the answers were "intersectional feminism" — the idea that there's no one-size-fits-all definition of feminism — and U.N. climate chief Christiana Figueres.

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

Arizona Hispanics Poised To Swing State Blue

5 hours ago
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Why Engineers Want To Put B Vitamins In 3-D Printers

Oct 25, 2013

Almost every day it seems there's a new use for 3-D printing.

In medicine, the printers are already making prosthetic hands, hearing aid cases and parts of human ears.

But the materials used in some 3-D printing processes could be toxic to humans, particularly if the products get inside the body. So researchers have been looking for ways found a way to replace some of the bad stuff with naturally occurring riboflavin, or vitamin B2.

Riboflavin is found in lots of food, including green veggies, nuts and fish. Our cells aren't programmed to reject it, which could make it handy for use in 3-D printed medical implants, microneedles or scaffolding to build custom body parts in the lab.

The researchers focused on a 3-D printing technique called two-photon polymerization, which can produce finely detailed, microscopic structures. The 3-D printer uses lasers to transform a potion of light-sensitive chemicals into a solid structure.

But some of the chemicals in that potion can be bad for us, says biomedical engineer Roger Narayan, one of the researchers behind the new technique. "And if they leach out of the material they can cause problems," he says.

The researchers, from the joint biomedical engineering department at North Carolina State University and the University of North Carolina, Chapel Hill, say that their new material appears to hold up pretty well, though they are looking into whether they can improve its durability.

Narayan tells Shots that while this technology isn't ready for human use, it could be before long. "I don't think anyone 10 or 20 years ago thought that you'd be making hearing aid shells or ... dental devices using 3-D printing," he says.

So far, the researchers have tested the material with cells taken from cows. They published their findings in the journal Regenerative Medicine. Before testing the material in animals or humans, they plan to refine it further.

Narayan says many 3-D printing techniques originated in the electronics industry, where it doesn't matter as much if something is slightly toxic. The challenge is figuring out how to adapt the techniques to the medical field.

Copyright 2014 NPR. To see more, visit http://www.npr.org/.