Zynga, the company behind popular Facebook games such as Farmville and Cityville, is expected to have its initial public offering before the end of the year. Zynga is a phenomenon. More than 200 million people play its games each month. One person who doesn't feel Zynga's success is cause for celebration is video game designer Ian Bogost. Bogost thinks Zynga's games are mindless, designed to suck money out of players' pockets. To make his point he created a parody game of his own. As On the Media's P.J. Vogt reports, what Bogost didn't expect is that his satire would become one of the most popular games he's ever made.

For years, a theory has held that Earth's large moon played a critical role in stabilizing the planet's tilt, damping down differences between the seasons. Now, astronomer Jason Barnes says that life on our planet would endure even without a moon, a finding that might increase the number of potentially habitable planets in our galaxy.

Citing "capital scarcity" the Geron Corporation said it will abandon its research into using human embryonic stem cells to treat spinal cord injuries. Stem cell expert Leonard Zon discusses the announcement and what it means for the future of embryonic stem cell research.

With the Macy's Thanksgiving Day Parade less than a week away, it's crunch time for the balloon technicians. Science Friday goes behind the scenes at Macy's design studio to find out about the final preparations for the parade.

Seven solar companies have filed a trade complaint with the federal government, accusing China of dumping artificially cheap solar panels on the US market. But solar installers welcome the low prices. Ira Flatow and guests discuss what's best for the domestic solar industry--and US jobs--in the long run.

Toilets, as most of us know them, haven't changed much since the 1800s--they use a lot of water, and require an infrastructure that many communities can't afford. Ira Flatow and guests look at the problem of access to sanitation, and how engineers are making toilets better.

Google's music store will allow Android smart phone users to buy songs directly from Google, which is something they can't do from iTunes. They'll also be able to share their purchases with friends on the Google Plus social network. But the company, known mainly for its search engine, has a long way to go before it can challenge the big kid on the block.

When he died on Oct. 5, Steve Jobs was eulogized as the tech visionary who put elegantly designed gadgets into the lives of people who often hadn't realized the devices were essential — until Jobs, and Apple, created them. A recently recovered 1995 interview offers another chance to hear from the late CEO.