The Habitable Planet Network was formed in response to our planetary challenges in an age of discovery. It is co-led by Caleb Scharf, senior lecturer at the Department of Astronomy and director at the Columbia Astrobiology Center, and Linda Sohl, planet-systems scientist at the Center for Climate Systems Research and the NASA Goddard Institute for Space Studies. Presently a 14-person group with members from Lamont, GISS, Astronomy, Biological Sciences, Applied Physics and Earth and Environmental Sciences, the network seeks to draw together Columbia’s strengths in planetary science and geoscience, exoplanetary science, astrobiology, and solar system science, together with biological systems and ecological science, to develop a set of interdisciplinary research themes centered around the concept of planetary habitability.