Scientists
have understood for a few decades now that we are headed towards big
problems, if we continue our profligate ways. They have tried to
inform the public and those in power that something needs to be done
to alter our course, before we smash into an environmental brick wall
and suffer the many dire consequences that our behavior is leading
to. Unfortunately, the leaders and the majority of people have turned
a deaf ear to the warnings. Worse yet, powerful interest groups have
dominated the media and convinced many people (especially in America)
to carry on with business as usual: not to worry, no need to back off
from the pursuit of whatever appeals to us. Go buy another car; build
a bigger house.
Even
worse yet, these powerful forces have attacked scientists and have
attempted to show that the scientific findings and predictions about
climate change are specious and irrelevant. The unfortunate
consequence is that many scientists have been forced either to go on
the defensive, or consciously mollified their statements, or even
have abandoned their attempts to inform humanity of the truth of the
matter. They find it too painful to tell the truth.
This
last point has led to a very disturbing development that has recently
emerged: the inclination for some scientists to give up the struggle
and pursue a dangerous alternative tack. They recognize that it's
already too late to correct course—that we've gone beyond the point
of no return (we haven't been able to check ourselves), and we must
therefore look to technology to get us out of this fix. Their
thinking seems to be: we can't convince people to change their
ways—to back off on their relentless pressure to consume and
proliferate—and it's getting too late, so maybe the only
alternative is to use our powerful technologies to try to compensate
for our damage.
I
find this last argument very troubling, because it continues to avoid
and/or deny the truth of what we are doing. Worse yet, it's a form of
playing God—as if we think we know enough to restore the
environment to the condition it was, before we upset it; without
having to change our problematic ways. Many of these ideas seek to
tinker with the environment, in an attempt to counter what we've
done. This approach is arrogant enough to think that we understand
the complexities of nature, to the extent that we can engage in
worldwide experiments to reduce or counter the effects of all the CO2
we've dumped into the atmosphere—simply by a creative technological
fix.
One
of these schemes is to dump huge quantities of iron into the oceans.
Another would purposefully scatter particulates into the atmosphere
to cool things down. Yet another would rocket jillions of tiny
mirrors into space to reflect some sunlight away from us. While these
notions could theoretically bring about some global cooling, they
will also likely cause side effects that could make things worse, or
send the whole delicately-balanced atmospheric system spiraling out
of control. Yes, we've developed an impressive understanding of how
Earth's climate works, but as yet we have the most primitive grasp of
the nature of the many complex interactions going on. You'd think
that maybe we'd have learned from some of our past catastrophes
(remember DDT?) of unintended consequences, but it seems that we
haven't.
More
on attempts to restore nature next time...