That's exactly what they said about the German forests only a few years ago and look at them now. More than half of the trees in the Black Forest are dying. We can't explain it away any longer, we simply cannot take the risk. Right here around these islands the tides are slowing down. Maybe because of silt building up from garbage being dumped in the bay, or from the over-use of fertilisers.
Lakes can die.
Entire oceans become polluted. Topsoil, forests, water - poisoned, dead. Things can change so fast. In the hands of man, nature becomes fragile. Rain becomes acid.