Studying Climate Change with Henry David Thoreau

To trace the impact of climate change on the plants and animals of Massachusetts, Dr. Richard Primack of Boston University turned to an unconventional source: the journals of 19th century philosopher Henry David Thoreau.  In these documents, Dr. Primack discovered a wealth of relevant, closely observed data.  Learn about this and Dr. Primack’s other intriguing discoveries in this week’s Growing Greener.