But an unlikely food source could go some way to ameliorating the loss of forested lands to agriculture. "On a global scale, and based on the past decade of tree-planting efforts, the researchers estimate that growing edible fungi on existing forestry lands could bump up food production without clearing more forests, while feeding millions of people annually. changing our food production systems, tackling food inequity, and eating locally sourced foods are other important ways of cutting greenhouse gas emissions and ensuring food supplies into the future