walking, biking and health...

I was looking at some obesity numbers and decided to find some numbers  on human powered transport - short trips in various countries.   An interesting plot emerges - it is *not* causal as several things have not be accounted for, but Americans were about as svelte as Europeans in the 1960s and had similar levels of activity....  hmmm

A link to a guest post I wrote. 

Here is the plot - check the link for details.