More letters to the editor show concerns about our changing planet and its effects on life. It is a powerful way for writers to remind, coerce and inform, hoping someone will strike the right chord to bring all countries together in this crisis. I applaud the Herald's decision to print many of these letters and to keep up their choice of commentary on the matter from excellent news sources worldwide.

Saturday's paper had Washington Post's journalist Helaine Olen's comments on the United Nations report. Headed: "We are threatening the biodiversity that makes our way of life possible", she sets out

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