A Main Line nature preserve is thriving amid coronavirus. Could it be a model for others to open?

In a densely developed and growing township that hosts one of the nation’s largest malls, the coronavirus crisis hit an obscure nature preserve in ways its keepers never could have anticipated. Amid the avalanche of virus-related closings in March, the 93-acre McKaig Nature Education Center in the Wayne section of Upper Merion Township chose the path less traveled by: It stayed open. It was a …