Eric Sanderson

400 years after Hudson found New York harbor, Eric Sanderson shares how he made a 3D map of Mannahatta’s fascinating pre-city ecology of hills, rivers, wildlife – accurate down to the block – when Times Square was a wetland and you couldn't get delivery.

Watch Eric Sanderson on Ted.

Henry Art Gallery

The Henry Art Gallery engages diverse audiences in the powerful experience of artistic invention and serves as a catalyst for the creation of new work that inspires and challenges. Exhibitions, collections, and public programs stimulate research and teaching at the University of Washington, provide a creative wellspring for artists, students, and educators, and reveal a record of modern artistic inquiry from the advent of photography in the mid-19th century to the multidisciplinary art and design of the 21st century.

www.henryart.org

Michael Specter

Michael Specter is a staff writer for the New Yorker. His new book, Denialism, asks why we have increasingly begun to fear scientific advances instead of embracing them.

Watch Michael Specter on Ted.