"1942Z"^^ . . "1942-04-01Z"^^ . "Martin Weitzman"@en . . "Martin Lawrence \"Marty\" Weitzman (born April 1, 1942) is an economist and a Professor of Economics at Harvard University. He is among the most influential economists in the world according to IDEAS/RePEc. His current research is focused on environmental economics, specifically climate change and the economics of catastrophes."@en . . . . . "American economist" . "Weitzman, Martin L."@en .