Agence France-Presse: Each person emits around two tonnes of CO2 per year just by eating, according to a recent study by researchers at the Universidad de Almeria (UAL). This means that, in total, activities related to human food consumption amount to 20 percent of yearly CO2 emissions. The study published in The International Journal of Life Cycle Assessment was the first of its kind to include the role of food production and human excrement in its calculations. The researchers led by Ivan Munoz at the UAL used the…