Olympics

This week's links include stories about agriculture, the Olympics, and cavities.

Making the blade turn by itself, and how a "klap" makes skaters go faster.

The physics and physiology of gliding toward gold.

Gaining speed without going downhill. Wind tunnel research helps athletes slide faster.

With the possibility of snow, rain, and fog, forecasters will need to provide hourly updates during the 2010 Olympic Games.

Success in this slick sport requires intense physical effort and concentration.