Good summary article, however devastating..
I hadn't realized that the bio- approach worked adequately (??) for rivers - 'course with 0.7 MEGAtons of the stuff extant, the sheer volume of the oceans, the billions whose food comes from same...
Toss into the mix the perpetual "Conservative" view that planetary maintenence is a frill which is optional, fun to ridicule AND inconsistent with the perfecting of the employee-less automated Lean / Mean Corporation. Stir in.. the accelerating wealth-concentration among a small group (whose allegiance is to no social group on the planet except their immediate own). Bake this in the microwave a while. So then:
By the time your suggested experiment might yield results - (and IF... PCBs just happened to be: the single most likely cause of the creeping dumbth ??) ... would there be many left outside the bubble, capable of assimilating this new-found confirmation?
(If you could reach a "middle-manager", that is - crawling along at 4 mph in the 24'-long 9'-high 9000# Navigator Raptor-IV on the 'free'way - via his/her implanted cell-fone chip, and distracted by planning for a noon PowerPoint presentation re increasing the out-sourcing to Bangladesh ...)
Ashton
a homo-sap's continuing genetic line is not..
..a foregone conclusion.
Best we enjoy the moments yet available - no?