in message <[email hidden]>, Alan Braggins
(') said:Simon Brooke said:
The world is running out of cheap energy, fast. Fuel cells
are not a solution to this, nor is hydrogen; the energy
has to come from somewhere.
If anyone gets fusion working, hydrogen could be a useful
way of transporting the energy. Yes, I know, cheap
plentiful fusion power isn't any closer than it was
supposed to be 20 or 30 years ago, but we are talking
about hypothetical future innovations.
Sure. And if anyone starts mining the moon we'll have
infinite supplies of wensleydale cheese. Don't hold
your breath.
Quoted message said:Building huge great solar powered things in sunny
climates and shipping hydrogen elsewhere might work too,
or offshore windfarms might run electrolysis plants in
place and pipe hydrogen ashore instead of having
electricity cables.
This might work. But how many square metres of solar panel
in the Sahara desert add up to the energy cost of one
commuter's car? I know the Sahara has a lot of surface area,
so in principle it could possibly be done. But producing all
those solar panels has an energy cost, too.
Quoted message said:Quoted message said:Future transport is going to involve a lot more pedal
cycles, and a lot more sailing ships. They probably won't
look much like old pedal cycles or sailing ships, because
they will exploit modern understanding of structures and
modern materials; but that's what they'll be.
We're also going to see a lot less travel altogether. Very
few people will commute further than they can walk
(because the cost will be prohibitive)
Don't these two paragraphs contradict each other? If there
are a lot of pedal cycles, commuting will mostly be
restricted to cycling distance not walking distance.
I just find it hard to believe that for office type jobs,
commuting will continue at all. Working from home is just so
much more efficient and convenient. As people get used to
telecommunications I think the office will more or less die.
--
[email hidden] (Simon Brooke)
jasmine.org.uk~simonOpen ↗
IMHO, there aren't enough committed Christians, but
that's care in the community for you. -- Ben Evans