Among the plausible niches for extraterrestrial life in our solar system, the clouds of Venus are among the most accessible and the… — David Grinspoon Copy Share Image
The future peopling of Mars is much more than a scientific endeavor. It is a step of historic and spiritual importance for… — David Grinspoon Future Copy Share Image
I think chemists always think they know more than they know, because nature has a lot of possible pathways it can try. — David Grinspoon Chemists Copy Share Image
In order to have a decent chance to be a communicating species, you would have to learn to think and plan and… — David Grinspoon Chance Copy Share Image
Responsible global behaviour is ultimately an act of self-preservation of, by, and for the global beast that modern technological humanity has become. — David Grinspoon Beast Copy Share Image
I'd like to jump a couple hundred years into the future and work with the scientists who are getting back the first… — David Grinspoon Astronomy Copy Share Image
Once we become a multiplanet species, our chances to live long and prosper will take a huge leap skyward. — David Grinspoon Copy Share Image
Our most valuable resources - creativity, communication, invention, and reinvention - are, in fact, unlimited. — David Grinspoon Communication Copy Share Image
I think a lot of people interested in space exploration tend to hear stories about the great missions, how they work technically,… — David Grinspoon Exploration Copy Share Image
The reason you see so many volcanoes on Venus is partly due to the fact that there's virtually no erosion there. So… — David Grinspoon Earth 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 Age Copy Share Image
There is a real danger of unintended consequences, of encouraging people to give up. Pessimism, if it becomes a habit, can reinforce… — David Grinspoon Consequences Copy Share Image
Titan has rivers and lakes of liquid methane and ethane, methane weather systems of clouds and storms that mirror Earth's hydrologic cycle,… — David Grinspoon Copy Share Image
The more we look at the kinds of soils and the nature of the atmosphere and the polar caps, it all adds… — David Grinspoon Copy Share Image
We have to learn to become a new kind of entity on this world that has the maturity and the awareness to… — David Grinspoon Awareness Copy Share Image
We're pretty sure there's plenty of organic material on Pluto. The atmosphere is largely methane, and in sunlight, methane builds organic molecules.… — David Grinspoon Copy Share Image
A lot of the science fiction that I grew up reading was written when we still thought that Venus might be an… — David Grinspoon Fiction Copy Share Image
Whenever I see a nighttime picture of Earth from space, with its glowing lights, I am stirred by its beauty. — David Grinspoon Beauty Copy Share Image
I don't see it as coincidence that the great acceleration of the Anthropocene influences on Earth came during the same decades as… — David Grinspoon Coincidence Copy Share Image
I do a lot of work with NASA and am involved in research projects studying planetary evolution, Earth-like planets, and potential conditions… — David Grinspoon Evolution Copy Share Image
My high-school friends and I felt part of a community of smart, forward-looking space and technology freaks. — David Grinspoon Community Copy Share Image
Humans are possessed, to some degree, with the power of foresight. Yet we so often learn things the hard way, through disaster. — David Grinspoon Disaster Copy Share Image
It turns out one of my dad's best friends was Carl Sagan when I was little. They were both Harvard professors. — David Grinspoon Copy Share Image
I'm an astrobiologist, and I come from a planetary science background, so in a very broad sense, I study the evolution of… — David Grinspoon Biology Copy Share Image
As long as we can imagine a better path, of course we are obligated to seek it. This is why unwarranted pessimism… — 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… — David Grinspoon Colleagues Copy Share Image
In environments that are energy-rich but liquid-poor, like near the surface of Titan, natural selection may favor organisms that use their metabolic… — David Grinspoon Biology Copy Share Image
There was a long history of people believing there was life on Venus. It was about the same size as Earth. It… — 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
Time and time again, our species has escaped existential threats by reinventing ourselves, finding new skills not coded in our genes to… — David Grinspoon Challenges Copy Share Image
Seriously, we should start taxing churches and have tax-exempt places for worship and study of nature and art. Charge ten bucks for… — David Grinspoon Art Copy Share Image
Venus and Mars are our next of kin: they are the two most Earth-like planets that we know about. They're the only… — David Grinspoon Mars Copy Share Image
We've almost been wiped out as a species many times, going back millions of years, and we've survived by reinventing ourselves and… — David Grinspoon Awareness Copy Share Image
It will be a long time, if ever, before we get to study Earth-like planets orbiting around other stars, so really, the… — David Grinspoon Copy Share Image
Thinking about the new epoch - often called the Anthropocene, or the age of humanity - challenges us to look at ourselves… — David Grinspoon Age 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… — David Grinspoon Change Copy Share Image
It's one of the big mysteries about Venus: How did it get so different from Earth when it seems likely to have… — David Grinspoon Astrobiology 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 Ability Copy Share Image
Among the radio astronomers of SETI - the Search for Extraterrestrial Intelligence - it's only sort-of a joke that the true hallmark… — David Grinspoon Astronomy Copy Share Image
In my Ph.D. thesis, written in 1989, I discussed the fact that when a civilization develops the technology to prevent catastrophic asteroid… — David Grinspoon Evolution Copy Share Image
