The myth and mistunderstanding about CO2, plants and food value

Claims that increasing carbon dioxide would benefit the world’s plants is not, in a sense, incorrect.

Plants need CO2 to grow, but complications arise when the carbon dioxide levels pass acceptable concentrations.

A plant’s productivity, growth and value in terms of a food crop deteriorate once C02 levels exceed evolutionary limits.

The world presently have CO2 levels at about 400 part per million (ppm) and by mid-century it will be far higher and so the world’s food crops, and billions of people, will suffer.

Reporting in a story headed: “Rising CO2 level may cut crop nutrients, study finds”, the Huffington Post explains how tests aimed at understanding expected mid-century atmospheric concentrations of 550ppm were carried out by the Harvard School of Medical Health.