for most of the 90's the concern was underpopulation
Among a rather select set of those interested in the subject.
Yes, a great deal of fairly short-term (on a civilization/species perspective) issues arise when your birthrate suddenly falls, especially if it had previously been rising markedly. But concerns over the Earth's carrying capacity and how many humans can be supported, sustainably, and at what level of per-capita resource consumption (and hence, at what standard of living) are, without exaggeration, the single biggest challenge of the next 50-100 years.
And all three factors come into play: population, per-capita resource consumption (PCRC), and sustainability.
You can get a large sustainable population at a low level of PCRC. Do you really want a world of 10 billion living in the conditions of Kolkotta, Bombay, Manilla, or a Brazilian favela?
You can get a large population and high PCRC ... but low sustainability. Do you really want modern technological civilization to run into a brick wall / off a cliff in 20, 40, 80 years? A fair number of people reading this can expect to be alive then.
You can get a sustainable but smaller population at a higher PCRC. At which point the questions become, what's the minimal level of consumption you want to support, how many people can it support, and how do you get from n(0) to n(t) where t is the end of the transition period. History shows that periods of depopulation tend not to be particularly tranquil.
For the HN twist: thinking about these sorts of problems seems rather more pertinent then trying to craft the next Uber for windsurfing or video ad pre-roll monetization scheme for Mexican K-Pop tweens.
But the problem's hardly easy. A bit posted a few weeks back on how Kleiner-Perkins has stumbled in trying to pursue a green strategy struck me as immensely sobering. A business whose business is making money hand over fist over commercializing new ideas losing money hand over fist failing to commercialize on new ideas suggests that cracking this nut is going to be really, really fucking hard.
John Doerr investing $200 million in green energy while simultaneously lobbying for California to cap carbon emissions? No conflict of interest there...
Among a rather select set of those interested in the subject.
Yes, a great deal of fairly short-term (on a civilization/species perspective) issues arise when your birthrate suddenly falls, especially if it had previously been rising markedly. But concerns over the Earth's carrying capacity and how many humans can be supported, sustainably, and at what level of per-capita resource consumption (and hence, at what standard of living) are, without exaggeration, the single biggest challenge of the next 50-100 years.
And all three factors come into play: population, per-capita resource consumption (PCRC), and sustainability.
You can get a large sustainable population at a low level of PCRC. Do you really want a world of 10 billion living in the conditions of Kolkotta, Bombay, Manilla, or a Brazilian favela?
You can get a large population and high PCRC ... but low sustainability. Do you really want modern technological civilization to run into a brick wall / off a cliff in 20, 40, 80 years? A fair number of people reading this can expect to be alive then.
You can get a sustainable but smaller population at a higher PCRC. At which point the questions become, what's the minimal level of consumption you want to support, how many people can it support, and how do you get from n(0) to n(t) where t is the end of the transition period. History shows that periods of depopulation tend not to be particularly tranquil.
For the HN twist: thinking about these sorts of problems seems rather more pertinent then trying to craft the next Uber for windsurfing or video ad pre-roll monetization scheme for Mexican K-Pop tweens.
But the problem's hardly easy. A bit posted a few weeks back on how Kleiner-Perkins has stumbled in trying to pursue a green strategy struck me as immensely sobering. A business whose business is making money hand over fist over commercializing new ideas losing money hand over fist failing to commercialize on new ideas suggests that cracking this nut is going to be really, really fucking hard.
And I sincerely believe John Doerr put his all into it. Watching him brought to tears is hard to watch: http://fixyt.com/watch?v=nuXJFbJNltg