Worcester podiatrist Dr. Neil Feldman, unwilling to live like a groundhog, has been regularly taking his young son, Justin, to school in our local forests. Finding a magnificent growth which he didn’t recognize, Dr. Feldman texted me a photo, asking what was covering the huge rock and was it edible. It turned out to be a large patch of lichens, one of about 20,000 species whose origins go back over 2 billion years. That lichens cover about 6% of our […]