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Here's the challenge: Build a rocket engine. Don't worry, you don't need much.

At the SXSW festival in Austin on Saturday, startup companies DIYRockets and Sunglass are launching a competition to create 3-D-printed rocket engines with open source (read: free) technology.

This interview was originally broadcast on Feb. 14, 2012.

Four years after Pulitzer Prize-winning writer Tim Weiner published Legacy of Ashes, his detailed history of the CIA, he received a call from a lawyer in Washington, D.C.

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IRA FLATOW, HOST:

Now for nightmare bacteria. They defy all our antibiotics, even our latest drugs. This week the Centers for Disease Control and Prevention announced that strains of these completely drug-resistant bacteria have quadrupled in the last decade or so, and the bugs have been lurking around in hospitals, hundreds of hospitals around the nation.

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IRA FLATOW, HOST:

This is SCIENCE FRIDAY, I'm Ira Flatow. Here's some news to raise a glass to: the idea that red wine may help us live longer and healthier lives. Well, it got a new boost this week. According to a team of researchers, a compound found in the skin of grapes could be an antidote to aging by slowing down the process and even fending off disease and inflammation associated with getting old. It's the topic of a new study published this week in the journal Science.

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IRA FLATOW, HOST:

This is SCIENCE FRIDAY. I'm Ira Flatow. By now I'm sure you've heard about the real-life nightmare of a Florida man named Jeff Bush. As he lay sleeping last week, a gaping hole opened beneath his home, swallowing him alive. His body was never found. The search has now been called off, and the sinkhole that devoured him is now his grave.

Presidents and dignitaries from around the globe are gathered in Caracas this morning to pay their final respects to Venezuelan President Hugo Chávez.

CBS News reports:

Former Rep. Gabrielle Giffords, who survived a 2011 gun attack that left six people dead and 13 others (including Giffords) wounded, is this year's recipient of the John F. Kennedy Profile in Courage Award.

Oz the Great and Powerful. Say that name aloud and you will smile, I guarantee you: It will conjure up so many images, characters, actors, songs. Then hold that smile as long as you can, because you won't be doing much smiling at the movie called Oz the Great and Powerful, the so-called "prequel" to The Wizard of Oz from Disney Studios.