2015 Isaac Asimov Memorial Debate with Neil deGrasse Tyson: Water, Water main content.

2015 Isaac Asimov Memorial Debate with Neil deGrasse Tyson: Water, Water

by AMNH on


Podcast graphic overlaid on photo of Neil deGrasse Tyson with microphone.

Earth is the only place in our solar system with liquid water on its surface. Even though water makes up only 0.03 percent of the Earth’s total mass, it covers 70 percent of the planet’s surface. Where did this water come from? Why is it mostly in liquid form? Is water essential to all life in the universe—or just to life on Earth? Will we ever run out? 

In this podcast, listen in on a discussion between a panel of experts, including Heidi Hammel, Executive Vice President of the Association of Universities for Research in Astronomy; Tess Russo, a hydrologist at Pennsylvania State University; Ellen Stofan, planetary geologist and Chief Scientist of NASA; Kathryn Sullivan, a geologist at NOAA; and Charles Wald, a retired general from the U.S. Air Force. Host and moderator Neil deGrasse Tyson, Frederick P. Rose Director of the Hayden Planetarium, leads this lively conversation on the past, present, and future of water.

The 2015 Isaac Asimov Memorial Debate took place at the Museum on April 28, 2015. 

Podcast: Download | RSS | iTunes (1 hour, 48 mins, 155 MB)

Watch a video of the event here: 

The late Dr. Isaac Asimov, one of the most prolific and influential authors of our time, was a dear friend and supporter of the American Museum of Natural History.  In his memory, the Hayden Planetarium is honored to host the annual Isaac Asimov Memorial Debate — generously endowed by relatives, friends, and admirers of Isaac Asimov and his work — bringing the finest minds in the world to the Museum each year to debate pressing questions on the frontier of scientific discovery.  Proceeds from ticket sales of the Isaac Asimov Memorial Debates benefit the scientific and educational programs of the Hayden Planetarium.