Maybe I'm just a little fussy about words.
The Washington Post article, to which the submission linked, hedges
its position a little too much for my liking.
> Scientists have speculated that factors beyond deliberate dumping
could be at play. The mercury could have settled in the river’s
sediment due to past pollution, before being stirred up by recent
dredging. Europe’s historic heat wave this summer could also be to
blame. The continent is facing what is potentially its worst drought
in 500 years; low water levels and high temperatures could be
choking off oxygen supplies to the river’s aquatic life and
worsening existing pollution.
Really? Let's see what the instruments say before speculation please
"scientists".
Somehow I'm feeling that's an unnecessary or over-charitable degree of
balance and restraint. Calling something a "catastrophe", instead of
an "act", has softer implications that don't quite seem right here to
me.