There is a real danger of unintended consequences, of encouraging people to give up. Pessimism, if it becomes a habit, can reinforce… — David Grinspoon Copy Share Image
Why should we consider defining intelligence as something global and as something that hasn't actually yet appeared on Earth? It may be… — David Grinspoon Copy Share Image
Mars does not have an atmosphere and does not have a magnetic field today, so the planet doesn't have the protection from… — David Grinspoon Copy Share Image
Humanity has at least a dim, and growing, cognisance of the effects of its presence on this planet. The possibility that we… — David Grinspoon Copy Share Image
It's quite possible that the end of us will not be the end of the Earth. Even if we really screw things… — David Grinspoon Copy Share Image
Part of the point of SETI has always been a search for answers about our own cosmic potential and destiny. If 'they'… — David Grinspoon Copy Share Image
Even as our unwitting alterations to Earth's carbon and hydrological cycles slowly make storms more damaging, our ability to monitor our planet… — David Grinspoon Copy Share Image
We definitely don't want to go through another Ice Age or another natural cycle of global warming. Both happen over a long… — David Grinspoon Copy Share Image
We're going to stop looking at Earth from orbit because we don't like what we are seeing and the conclusions that leads… — David Grinspoon Copy Share Image
I think the best SF writers are very aware of what we, in the scientific community, are doing, thinking, and discovering. — David Grinspoon Copy Share Image
If we gutted NASA Earth Science, it wouldn't be NOAA or some other agency that would take the lead. It would be the Chinese… — David Grinspoon Copy Share Image
When you think about alien intelligences making art, you then have to think about what art is and how bound up it is in… — David Grinspoon Copy Share Image
What if life is not carbon-based? Can life exist as a gas or a plasma? Could planets or stars in some sense be alive?… — David Grinspoon Copy Share Image
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… — David Grinspoon Copy Share Image
I do comparative studies of climate evolution, and the interactions between planetary atmosphere and surfaces and their radiation environment, and try to understand the… — David Grinspoon Copy Share Image
I'd been politically active ever since my parents wheeled me in a stroller in a 'ban the bomb' march in Boston in 1963. — David Grinspoon Copy Share Image
Through space-based climate studies, my colleagues and I have learned that a stable and comfortable climate is not something to take for granted. — David Grinspoon Copy Share Image
We have all this very clever technology and all these abilities to manipulate the world in all these ways, yet we are faced with… — David Grinspoon Copy Share Image
The planet Mars - crimson and bright, filling our telescopes with vague intimations of almost-familiar landforms - has long formed a celestial tabula rasa… — David Grinspoon Copy Share Image
Certainly for me, as an astrobiologist, science fiction has played an important role. One of the quandaries of our field is that we are… — David Grinspoon Copy Share Image
Time and time again, our species has escaped existential threats by reinventing ourselves, finding new skills not coded in our genes to survive new… — David Grinspoon Copy Share Image
