“What I'm interested in is the conversations going on about the Anthrop...” — David Grinspoon Quote

“What I'm interested in is the conversations going on about the Anthropocene and what it means to view ourselves as a part of Earth's geological history.”

“I intend to apply the perspective of astrobiology, which is a deep-time way of looking at life on Earth, towards the question of the Anthropocene. What does the human phenomenon on Earth look like viewed from an interplanetary perspective?”

“There is a history of thinking about space science from an environmental ethics perspective. And part of what I want to do is turn that back and use that experience to see if it reflects how we think about the Earth.”

“I never thought I'd see the day when the U.S. government could listen in on phone conversations or read private mail without first obtaining a warrant from a court. That sounds more like something that happened in the Soviet Union.”

“You can put me on a plane now and I can go anywhere and just by talking having one or two conversations I can have an idea where I am in the U.S. or whatever.”

“Twitter is like overhearing people's conversations, which is exactly what dictionary editors have been wishing we could do for years.”