Dear readers, as you rarely get the last word, this week’s column aims to put that right.

Two weeks ago, I wrote about the dangers of our society’s addiction to oil, and noted that much of the world still believes the primary purpose of the U.S. invasion of Iraq was to dominate its oil supplies and establish regional hegemony. I also outlined some environmental threats posed by oil-dependence, and made brief mention of one author’s suggestion that we look to hemp as a less harmful alternative to oil.

These are excerpts from some of your e-mail responses.

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