Walking (and learning)

I found an excellent iPhone pedometer app (Pedometer Ultimate GPS+).  The screen captures may not be entirely readable, but the  app records paces, distance, time, and the route.  Data is also recorded on the iPhone, with numeric and graphic summaries.

After about six weeks of daily walks (with only 2 non-walking days) , I have some pretty solid averages:
2.1 miles per day,
1930 paces/mile,
2.7 mph.

The learning part:  John Merriman's lectures on Modern European History, available from Open Yale.  The lectures are not systematic -- more like illustrations of the textbook - but extremely engaging nevertheless.  I'm just about finished with it set, and have several other options queued up.