It’s many years since electric cars and anaerobic digesters on farms were first tried out. But they are back in vogue once more
by RALPH WINFIELD
Some of us who have been around for a long time or have done significant literature reviews know that a few reportedly new ideas are not new at all. In some cases, they are just being revived because the time is right.
I have two examples that I would like you to ponder. One is less than 40 years old, the other over 100 years old. Let us look at the more recent one first.
Anaerobic digesters on farms. In the late 1970s and early ’80s the governments of Ontario and Canada partially funded a number of anaerobic digesters on Canadian livestock farms.