Getting up close and personal with a hot and richly fermenting cowpat in Idaho, USA may not be everyone’s idea of a good time. As a visitor activity it is unlikely to compete with the country’s most famous attractions — like Times Square or Disneyland. But after my visit to drought-stricken California, that cowpat on the natural pasture of a non-intensive cattle ranch, alive with a riot of different grasses, herbs and wildflowers, was…