Reconsiderations of past, present, and future in a new environmental humanities book Featuring contributions from scholars representing a range of disciplines, ‘Timescales: Thinking Across Ecological Temporalities,’ is an outgrowth of the Penn Program for Environmental Humanities. For a geologist, 200 million years may seem like the blink of an eye. To a historian, the 18th century is still highly relevant. And to researchers grappling with climate change, future scenarios provide a compelling reason to act now. In the new book, “Timescales: Thinking Across Ecological Temporalities,” Bethany Wiggin of the Penn Program in Environmental Humanities (PPEH) and co-editors Carolyn Fornoff and Patricia Eunji Kim, both alumnae of Penn and PPEH, bring together reflections from experts in a variety of academic disciplines on the relationships between past, present, and future and what that means for a planet in crisis.