I went down to Occupy Wall Street a few times over the past few weeks to record sound. The idea was to make a sound collage from the protest. But what came about was a little more structured: an unnarrated documentary about OWS’s kitchen collective, which feeds the hundreds of occupiers who’ve called Zucotti Park home for the past days and weeks.

The scene: a blustery Sunday night, just about 6 PM, dinner time. Listen here.

How can you best deliver folic acid to women in the developing world? That’s just the question the New York Academy of Sciences’ Scientists Without Borders program sent out to their network last year. The challenge was the topic of their first annual Nutrition Prize.

Hear all about the importance of folic acid, especially for pregnant women, and the winning solutions from SWB challenge in my newest Science and the City  podcast.

I cover the tar sands debate in the latest issue of E: The Environmental Magazine. First, Friends of Earth’s Alex Moore talks about environmentalists’ opposition to the proposed Keystone XL pipeline, which would carry many thousands of gallons more tar sands oil from Canada into the United States if approved. Then, read about the U.S.’s own tar sands potential, as I talk to both sides of a dispute over the first domestic tar sands mine in Utah.

Post-doc John Steele, a mentor from NYAS's "Summer Matters" program, teaches kids about DNA transcription.

This summer I spent a few days at Booker T. Washington Middle School on the Upper West Side with a bunch of 12-to-14-year-olds and two post-docs, doing some pretty basic—and surprisingly fun—science experiments. The end results is this podcast, in which I profile the New York Academy of Sciences’ “Summer Matters” STEM* mentoring program. Go on, take a look at—or at least have a listen to—hands-on science education in action.

*STEM = Science, Technology, Engineering and Math

UPDATE (8/30): Click here to watch an audio-slideshow of a “DNA-relay” at Booker T.