Gilbert E. Metcalf is the John DiBiaggio Professor of Citizenship and Public Service Emeritus at Tufts University where he taught economics for nearly 30 years. In addition, he is a Research Associate at the National Bureau of Economic Research and a University Fellow at Resources For The Future. Metcalf's primary research area is in the area of energy and climate change policy. He has extensive government engagement including serving in 2011-12 as the Deputy Assistant Secretary for Environment and Energy at the U.S. Department of Treasury where he was the founding U.S. Board Member for the UN based Green Climate Fund. On the Dutch waterways cruise, Gib will give a talk about speculative asset bubbles (think the Dotcom Bust and Cryptocurrency Crash). This is a fitting topic given the infamous Tulip Mania in the 1630s. The financial fervor around investing in tulips is considered the first historically known financial bubble in modern history.