Globally existential threats due to ‘overpopulation momentum’
together with the top-heavy age structure leave by now no
alternative to radical technological adaptation for anything
that wants to survive 'long term'.  It is strictly too late to
‘go green’ except via a novel take on what constitutes ‘green’,
including synthetic biology.  Hyped for a long time, nanoscience
is still largely in its pioneering phase.  However, it matures
as we speak and soon, as it becomes true nanotechnology, it will
leave the hype far behind.   Is nanotech harmless?  Mother
Nature has adapted via nanotechnology all along, namely with
nanometer sized replicators and catalysts.  The latter we call
“enzymes”, but catalysts they are nonetheless.  Humans are
nanotech robots that nature made, complete with what may equally
count as “artificial intelligence”.  Thus, one is tempted to
brush fears about dangers away, much like the naturally existing
interactions of cosmic radiation in atmosphere and plants refute
the alleged existential d