Occupy Wall Street protests are planned in cities around the country Saturday. On Friday in New York, a planned clean-up of Zuccotti Park near Wall Street was postponed. NPR's Margot Adler reports on daily life in the Lower Manhattan park where the protest movement began. At first glance, the lives of the protesters may seem loose and anarchistic, but there's actually lot of invisible technology, infrastructure, innovation and even some sophisticated finance going on.

The Keeneland racetrack in Lexington, Ky., holds a vast collection of the Daily Racing Form, the newspaper of the thoroughbred industry. It doesn't have enough financial resources yet, but the library is working on preserving and digitizing the paper, in print since 1894 — and still printing.

If you try to spin a raw egg on a table, you will notice that it doesn't twirl very well--at least compared to a hard boiled egg. Astronaut Don Pettit wondered what would happen if you repeated the experiment in space. Any guesses?

Carl Sagan once said that if you want to make an apple pie from scratch, you must first invent the universe. In his book The Toaster Project, author and artist Thomas Thwaites describes his effort to build a cheap plastic toaster from scratch, and what the project taught him about material goods, self-reliance, international commerce, and globalization.

Chemists and materials scientists are trying to learn to build ultra-small, precisely ordered structures for use in optics, electronics, and other applications. Writing in the journal Science, Chad Mirkin and colleagues describe a way to use snippets of DNA to tailor the shape and size of crystal structures, tweaking them to fit specific uses.

The YouTube Space Lab competition is asking high school students to submit video proposals for space-based science experiments. Zahaan Bharmal, a Google executive who envisioned the competition, says that the winning entry will be performed on the International Space Station and streamed live on YouTube to the world.

An unsung hero of the computer world has died. Dennis Ritchie created the C language — which is the foundation for most computers, including the iPad and iPhone.

After a major service outage this week, Research In Motion, or RIM, the company that makes Blackberries, faces major problems. The outage, which left millions of customers all over the world without service for up to three days, comes on the heels of a tablet flop and an embarrassing role in this summer's U.K. riots. Guy Raz talks with Chip Cummins of the Wall Street Journal about the future of the company.