Weekend Edition Saturday

To be a parent is to be constantly reminded that almost everything you thought you were doing right for your children will one day turn out to be wrong.

The wisdom on whether your baby should be put to sleep on his back or stomach, whether fevers should be treated or left to run their course, seems to change every few years. Parents used to think nothing of letting their children bounce around like pingpong balls in the back of a car. Now, children are strapped in the back like astronauts waiting for blast off.

The latest revised revelation may be: Training wheels don't help a child learn how to ride a bicycle. In fact, training wheels might postpone their progress by teaching children to pedal, rather than keep their balance.

Early investors like investment banks and venture capitalists already own shares of Facebook. Some are even starting to sell. Now small investors get their chance to buy with Friday's IPO. NPR's Sonari Glinton checks in with a few of them on the first day of trading.

The "Radio Time Machine" is an online application that has collected the top 20 Billboard hits back to 1940. Some transcend their time period, while the appeal of others may be harder to understand. Host Scott Simon speaks with Brett Westervelt, a grad student at Stanford University and the designer of the app.

Facebook's culture and the nature of its business will inevitably change after it goes public. Its finances will be much more open to scrutiny. NPR's Steve Henn tells host Scott Simon that because founder and CEO Mark Zuckerberg owns so much of Facebook's stock, he will continue to have significant autonomy from Wall Street's demands.

Container gardening is an easy and convenient way to have flowers and vegetables in small spaces. KUNC gardener Tom Throgmorton has tips and advice on starting your own container garden.