How long will human civilization last? You can find Dr. Grinspoon's books here. Earth in human hands: amzn.to/2OFyfxp Venus Revealed: amzn.to/2ODtlAK Chasing New Horizons inside the epic first mission to Pluto: amzn.to/2PUZk0G

Civilization is hard to quit. Especially when your midterms are tomorrow and you keep thinking, "just one more turn..."

This channel is definitely some of the best content on KZfaq.

All of your programs interesting, John. But this is by far one of the most fascinating episodes I’ve heard across both of your channels. Thank you.

Best youtube channel! These Thursday uploads are a treasure!

Perhaps one of your best shows ever, John. An outstanding guest masterfully interviewed. I will be sharing this episode widely. IMHO I don't see broad based human civilization making it out of the 22nd century, unless we alter our technical trajectory radically. Thanks!

This awesome.. I have read all of Dr. Grinspoons books and I love it when my favorite channel dives deep with someone I respect. Great episode.

What I notice and find interesting is that when we search for life or habital planets that we only look for what we live on. We don’t consider that some other form of life has formed on a completely different type of planet and maybe they are doing the same thing. Meaning they might see our planet but it isn’t a place they can live so they don’t see it as a potential carrier of life. We could be skipping right past each other.

Now my best moment of the week is Thursday night! Keep on the good work and great content! thank you for giving us such good interviews! Salutations from Portugal

Truly an oasis in today's world. After going through many depressing news clips of middle East today I got my cup of tea and sat down to listen to the man who his interviews and interviewees are always worth listening to. Who else but John Michael Godier.

Again like all of these interviews on this unprecedentedly amazing KZfaq channel (J. M. Godier is preeminent, and responding to some of our most important and deeply urgent intellectual questions and values. The way the Q and A's go he also allows every important expert to walk us around the block in ways that are simple and substantive and at the same time the questions JMG poses resonate with the audience's deepest concerns--They "go to the root, not the fruit," to cite that lovely methodological insight from Edmund Husserl). I will take issue however with Dr. Grinspoon's somewhat sanitized view of the great filter of anthropogenic global warming (~39:00). Though my work in the hard sciences has been primarily in theoretical particle physics at Georgia Tech, I also have a Master's degree in Earth and Atmospheric Sciences and have studied GCMs and climate change for several decades since grad school. Nowadays, I teach courses in environmental ethics which even in the "Bible Belt" university I teach in is a course that (for obvious reasons) is increasing in enrollment by leaps and bounds. What I can say about this great filter is I'm definitely a "gloomer," but not a "doomer." If there is no political will on a global scale which would include shocks like geoengineering to mitigate the rates of average temperature rise, we are facing the prospects of runaway warming in the form of planetary kisses of death like blue ocean events. This has everything to do with runaway feedbacks and nonlinear dynamical systems theory. Whereas it's doubtful that anthropogenic global warming would render human life completely extinct along with most of our present macrofauna (contrary to some of the doomer predictions of conservation biologist Guy McPherson) it would DEFINITELY wipe out organized society and human civilization as we know it. My sense is that Dr. Grinspoon is basically extrapolating from the recent UN climate change report which seriously lowballs the implications and the effects of runaway warming which we are witnessing now. Keep in mind that it's primarily affecting the Earth's ocean ecosystems, chemistry, fluid dynamics, and radiative transfer above all else. The Earth's oceans drive the climate on the Troposphere which to give you an idea how thin that onion peel layer is, we're talking about an exponentially diminishing density of mixing of gases of a height between 12 and 16 km. (The Earth's radius is approximately 6,800 km). So it doesn't take much to precipitate runaway warming effects which will basically create unprecedented extinction events similar to the effects of intermediate continental and hemispheric thermo nuclear exchanges. In short, the great anthropogenic climate change filter is far more devastating than what is discussed in the public sphere. Most of my students know this already (who are generation Y and generation Z. ) Indeed, as social psychologists like Carolyn Baker point out an emerging new unprecedented mental health crisis is what she defines as "extinction-induced despair." And you have courageous philosophers and ethicists like Rupert Read who write on the ethics of ecological collapse and the complete collapse of our civilization as we know it (whose supply chains are predicated on just in time inventory and the global economics of unsustainability and inequality, constantly driving that Pareto efficiency beyond sustainable levels basically precipitating complete collapse.) The existential threat is real and beyond terrifying, and unless there's some Hail Mary 11th hour technological miraculous breakthrough in the form of some kind of sustainable geoengineering we've already crossed the tipping point and it's pretty much too late for any meaningful future of global civilization as we know it. Obviously our human population has far exceeded the carrying capacity of the biosphere as we go barreling on toward an estimation of 10 billion by the year 2040 but I think the anthropogenic climate change filters going to affect adversely that birth rate catastrophically before we hit that mark. The immediate future is grim and at best horrifyingly bleak--I do however take some comfort in Neil Howe's intergenerational theories of cyclical crises that occur approximately every century, i.e., his book: The Fourth Turning. However, contrary to the previous crisis that occurred in the previous cycle, i.e., the genocide of World War II, anthropogenic global warming is really inducing omnicide (to quote Guy McPherson): Species and populations in food chains are collapsing right and left even on and beginning with the scale of microbes and insects (The very base of the biotic pyramid to quote Aldo Leopold). This is absolutely unprecedented. Our oceans for all intents and purposes are giant acidic dead zones that continue to absorb more and more heat-- inducing these runaway feedback loops. So the present crisis is existential for every species of macroorganism on the Earth's biosphere. As far as the prospects of our present-day global civilization sustaining the kind of populations that we presuppose it to be able to do--Well folks, game over (though hope springs eternal... Perhaps some Kardashev scale one or greater ETI is going to violate its version of the prime directive and beneficently interfere in some technologically superior way? I.e., bail us out? We sure as hell could use all the help we can get!) So to sum up my lengthy comment above, contrary to Dr. Grinspoon, at least for the next several centuries, I'm no optimist, when it comes to this particular predicament of the anthropogenic climate change filter. I am however a "meliorist," (to cite from William James) in the sense that no matter how bad things get, that should not consign us to fatalism. We still have a moral imperative to act to improve or mitigate our lot, regardless of the consequences.

New(ish) subscriber. Adore all that I have listened to so far. This and many other videos. Thank you for helping me learn, and then be able to pass on to my daughter. Goodnight from the UK :-)

I've been a fan of Dr Grinspoon's for years. He's super intelligent and always has something interesting to say. Excellent episode.

Half a dozen topics in this episode that could be full episodes by themselves. Hopefully at some point they will be.

Just found your channel. Great content! It baffles me how you don't have more subs than most channels on KZfaq, but you have one more today. If this isn't a podcast also it should be.

Thanks for the fantastic content as always. This was one of your best episodes yet.

Fantastic video and chat, JMG! Thanks a lot!!!

Drink and snack ready. Bring it on Dr. Funkyspoon

How did I miss this one? Glad YT offered it again.

I only found this channel recently and it become my good morning and good night. Thank you John 😉

KZfaq: How many ads do you want? Anna: Yes.

I am so happy I just found this channel.

My own personal philosophy is that the collective consciousness of this universe has always existed, and it always will. And we will be part of it after we are gone from Earth. You, of course, are free to have your own.

✌The intro bird view image was my town Montreal ! Cool👍

4-5 shots of Montreal in the intro, love it, thank you

Perfect timing, I just finished watching an old SFIA episode.

Stunning content.

Should have asked him his thoughts on the movie >>Idiocracy

New game : take a shot everytime one of them say the words : "you know" . Just a joke. Great video , keep up the good work. You and Isaac are one of the best science authors these days

Your channel is fascinating and great! Amazing considering I hated and found these topics impossible to understand in high school and college.

It is good to hear Dr. Grinspoon expound on a most interesting subject. First, a question since I feel that I should ask one; is the resurfacing of Pluto caused by tectonic activity (i.e. by the movement of crustal plates) or more because of the freezing, melting, and refreezing of various ices? Secondly, if my somewhat faulty memory doesn't fail me, Dr. Grinspoon co-authored a very nicely designed and informative observers handbook with a fellow by the name of Jay M. Passachov (?) who was, I believe, the director of the Smithsonian Astrophysical Observatory

If we don't find any life in the solar system in any of these obscure places, we should definitely seed them all with custom designed organisms. So if we get wiped out at least life will live on in several ways.

We all fell in love with Pluto when we saw the images. Such a fascinating little world! 😍

I love your interviews JMG! I’ve about ran out of them (I put one on for my long walk/mental health break daily) so I guess it’s time to go back through. Thanks as always Also, I think the Europa Clipper mission alone is going to blow the doors wide open for all kinds of astronomy, hopefully with microbial life, but even if not. I hope it gets off the ground.

Loved the opening music. Gave me chills.

Awesome episode. Nice stock video of Montreal at the beginning 👍

This video aged like fine wine! Well done!

I always look forward to Thursdays greetings from Scotland 🏴󠁧󠁢󠁳󠁣󠁴󠁿

Love all the aerial shots of Montreal at the beginning!

Great content as always

Awesome channel, great episode, superb music...

Its satisfying to hear him advocating pushing for investigation into life on Venus (14:50) Ever since I did research on it I realised that we should actually be looking to Venus rather thab Mars for signs of life, and possible habitation

With all due respect but he says those things about ultraviolet radiation and life on Venus, but it seems to forget that when life started on Earth conditions weren't any better. Ozone layer came billion years after life started on Earth. Not to mention the acidic waters.

Automatic like for John! Best content on KZfaq

9months later, everyone be losing their minds over Venus and its clouds.

Holy golly that epic choir!

So many aspects of extreme interest here! Cannot help but wonder if 18.25 - 19.00 describes how some space traveling entity found our young planet Earth, and decided to 'seed' life here and hence us?! Fascinating stuff John, thanks.

Good cast, tons of info. Thanks!

Nice episode!

Unless there is some drastic change to the collective humanity will continue on a self-destructive trajectory.

Regarding the life in Venus Atmosphere. I know, life on Earth can be detected even up on the ISS, and down to the deepest areas of the sea, so I can imagine that it can survive on Venus. Probably life, that was imported from Earth, or that was formed on Venus. The more interesting question would be: at which height will it be living. How close to the surface can it get? Since there are some quite resilient bacteria on earth, I can imagine that they will sustain several bar of pressure, and quite a high acidity.

I love your voice, John! It makes me stick around longer ;p

Hello Event Horizon. Is it possible to make a future video about geometry. I'm making geometric wooden workpieces at the moment. :) Greetings from the Netherlands. :)

Really KZfaq !!!! You recommend me this during the covid time

Great show, he’s well minded an spoken

Humans have survived and we will continue to, never underestimate our will to survive.

All things come to an end. The dark beauty of life is that it will inevitably end.

What can we as fans do to get the podcast stream up and running?

15:49 - Life, uh... finds a way.

The time of the human will most definitely end. I can't see the human lasting longer than the next 10 to 20 thousand years at the most. History gives the most detailed solutions of what will transpire in the future. History supplies the patterns of behaviour which will be repeatedly duplicated going into the future.....

Cant wait for a netflix mini scifi series starring John and Anna!

Great video.

14:08: "You once wrote a book on Venus" sounds like he's saying that the man was on Venus, and wrote a book while he was there. I laughed when I heard that.

I consider Dr.Grinspoon as the best guest you discussed astrobilogy with. He is really open minded and not immersed in projecting Earth and human stuff everywhere onto Universe, which is what irritated me on several other people who have been there.

A day may come when the courage of men fails, when we forsake our friends and break all bonds of fellowship. But it is not this day. An hour of wolves and shattered shields when the age of Men comes crashing down! But it is not this day!

Personally, I feel like planetary protection is a nice idea, and can work for a short time, but spreading ourselves (the only known intelligent life in the universe) is more important than the scientific relevance of keeping the planets and moons untouched. Perhaps once we get a foothold somewhere we can worry about keeping places strictly to science.

Great interview! I agree that humans will likely survive on Earth for a long time to come. The question is how long will our civilization last. Will we have another dark age? Thanks for the episode!

Great discussion.

I know it's fiction but have you ever seen the movie "Andromeda Strain "?

Almost certainly yes, just a question of when and how

Epic as always

1 year later..... Were still here.

Another interesting video Based on ifs , buts, and maybes

Poignant comments regarding Venus and potential life, glad I revisited this episode

I predict that humans will be unable to get out of their own way and will self destruct...you cannot continue to push the boundaries of the trough without consequences. I believe there are millions of undiscovered examples of this throughout the universe.

Very interesting !

Ooooo super early for once. Just watched Because Science's video on the Expanse. While I don't think I'm going to be among those who actually go out and explore or colonize the solar system. I'm hopeful it eventually will happen, but humanity getting interstellar is going to be a huge jump.

So long as we keep focus on making "backups" it will never end. At least thats what I keep telling myself.

2:07. I love it.

36:42 The question in the title is addressed.

I love the positive thoughts of us not becoming extinct but i would think that if climate change go's to far we will be unable to survive a total atmosphere change which is possible due to the methane levels rising into the atmosphere and the fact that the earth takes a very long time to settle and recover from its natural events .

Just subscribed Great

Dr Grinspoon has been prophetic about life on Venus!

You could say that the anthropocean began in 1973 when Pioneer 10 was launched as the first human made object designed to exit the solar system after it had examined Jupiter.

Humans Are Curious Creatures, But Just As Curiosity Killed The Cat, Curiosity Will Kill Us.

Dr David Grinspoon: "Why don't we settle Mars?" Isreali Government: "Yep!"

It's like the old saying goes"Better to live on a cloud in Venus than hell on Earth". I'll just show myself out thank you.

I’ve never seen an ad for anything for my G.I. tract before, and my stomach just started rumbling and one popped up. That is some sophisticated ad listening tech

The way things are now, it looks like it already has ended 😱💀

I used to think an asteroid would wipe us out... Who knew it would be a bowl of bat soup..?

What a great last name! -should be a character in a Harry Potter novel or Dickens: Doctor Grinspoon!

Am I missing something, we are talking about Venus and all the pictures appear to be Mercury? very interesting topics all the same

hey its Montreal !

I have hope for us. I think eventually, we'll clean up our planet, settle the Moon and Mars, then push out into the galaxy.

It is a question of energy the Universe will live its adult Life Empty Cold and Dark like most humans...I think Advanced Human or Meta Human/Mecha Civ. will live inside Mega Simulation structures and their only need will be...Energy it will be more valuable than Time ...

perhaps life could survive in extreme places like titan I wonder if it can actually start there though ...

It began when we harnessed 🔥

Imagine the Martians we are looking for are actually Silicon based Plutonians inhabiting an orbit completely outside of our perceived habitable zone.

It all depends on interaction of changeable human culture and impervious laws of Nature and Evolution. To keep succeeding a species must obey the Evolutionary rules and win in that game AGAINST competing species (Earthly or not) while using other species&resources. Species must multiply, spread and adapt in best way possible to new environments. Beating the competition in the process. These principles are Natural and not dependent on current culture and morality. This is not a cartoon with blue people, this is unescapable reality. If our culture keeps drifting into denial of progress and expansion, sacrifice for other species, refusal to quickly colonize and adapt other (Mars?) environments, it will bring end to humans as this is competition to death. But if we diligently follow the rules and fight with all our capacity at the end times we may dominate the whole Universe. Our choice.

An excellent question in this time of a global pandemic...... seems in the grand scheme of things, humans can disappear overnight.... the veneer of civilisation is thin and our hold on the planet tenuous at best.