Walden Warming

“An unnervingly close-to-home perspective [on] the dynamics and impact of climate change on plants, birds, and myriad other species, including us.”— Booklist   In his meticulous notes on the natural history of Concord, Massachusetts, Henry David Thoreau records the first open flowers of highbush blueberry on May 11, 1853. If he were to look for the first blueberry flowers in Concord today, mid-May would be too late. Warming temperatures have pushed blueberry flowering three weeks earlier, a