All Things Considered

When Barack Obama first took office four years ago, many progressives were on cloud nine. Here was a president pledging to tackle some of the issues closest to the progressive base: climate change, gun control and what he called our "broken immigration system."

That was in 2008. Fast forward to now and these are just a few of the unresolved issues leaving progressives unsatisfied.

With Obama's second term around the corner, some progressives are wondering if President Obama will reboot and follow through with his earlier promises.

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PRESIDENT BARACK OBAMA: If Congress refuses to give the United States the ability to pay its bills on time, the consequences for the entire global economy could be catastrophic. The last time Congress threatened this course of action, our entire economy suffered for it.

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Old Aristocracy Hill isn't a part of Springfield, Ill., that draws a lot of attention. The quiet neighborhood dates back to before the Civil War, its historic homes now carefully preserved by proud business owners.

But outside a stately funeral home, a large black-and-chrome Harley Davidson motorcycle trike pulls out of the parking lot, towing a matching casket in its glass-sided trailer.

It's not something you would expect to see, but it's exactly what 67-year-old Lew Bird says his friend Dave Rondelli wanted: one last ride.

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Hugo Chavez has dominated Venezuela for so long that it's hard to imagine what the country would be like without him in charge. Opposition leaders are hoping for a new, more democratic system. But powerful factions in Venezuela want things to stay just as they are. Because the country is a key player in the region, NPR's Tom Gjelten says the U.S. is now making its own plans for life after Chavez.

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And I'm Audie Cornish. Scientists throughout the west are investigating a mysterious disappearance. Mule deer are vanishing. In Colorado, Wyoming and Utah, populations are half what they were in the 1970s. From Aspen Public Radio, Luke Runyon reports on some possible reasons.

The first key to thinking about 3-D printers is this: Do not think printer. Think magic box that creates any object you can imagine.

In the box, razor-thin layers of powdered material (acrylic, nylon, silver, whatever) pile one on top of the other, and then, voila — you've got a shoe, or a cup, or a ring, or an iPhone case.

It's miraculous to see. Press a button, make anything you want. But just how important is 3-D printing? Unlike earlier big-deal technologies (like, say, the tractor) 3-D printing won't really replace what came before.