upper storeys

In the news today, NASA adds weight to the common – but curiously inert – conclusion that ice sheets are melting and seas will be rising.  One thing Iʼve not seen much of is actual adaption strategies to this.  Of course in the longer term it remains to be shown that there is any possible adaption which will avoid human extinction or reduction to a form of subsistence economy which makes the concept of adaption moot.  We can hope.

In the short to medium term, though, say we are looking at a 4–5m rise in average sea levels.  The timescale for this may be a hundred or two hundred years (the viability of current models for this is questionable; new points keep coming along to make it worse).  Iʼm particularly thinking about the impact this will have on the town nearest to me.  Much of the existing commercial centre will at some point be under water at normal high tides (rather than parts of it, every few years, at some high tides with a heavy swell).  How can adaption work?  Arguably there could be viable approaches which retain the existing town footprint – flood barriers are popular in some places, but I have doubts about it in this case; spending that amount of money for very small populations may not be an option.  So perhaps a more sensible approach is to require all new buildings or refurbishments to take sea levels into account over their intended lifespan.  (Though buildings are often used beyond their expected lifespan, especially during prolonged economic downturns.)  At this point, if a given piece of work is only intended to last a decade, probably there is no new requirement.  If fifty years, well, maybe occasional protection against higher storm surges than weʼre used to for all but the lowest-lying or most exposed.  Beyond that, we probably need to think bigger.

windy cities

Trough cheap technology it will be possible to use the passing of vehicles to illuminate the city

Someone in Mexico wants to build a sort of below-ground bellows system to produce “sustainable” energy from passing cars.  Or pedestrians.  Apparently not aware that this is a means of decreasing the fuel efficiency of the traffic, hence not exactly sustainable. o_O

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