It took seven winters and 70,000 kilometres of flying over the vast forests and lowlands of far northern Ontario to build a picture of where wolverines are – and aren’t – in their easternmost North American outpost.  Our goal was to develop a method for accurately predicting where these elusive creatures were likely to be found in order to be able to track changes in their range in the face of climate change and resource development. We flew low and slow for hundreds of hour over frozen forests looking for tracks in fresh snow to build a picture of how wolverines are faring in Ontario.  The story of what we saw and what it means is now online in Scientific American.