The research found that two-thirds of the world’s carbon loss from agriculture and two-thirds of its biodiversity loss occurs on just one-third of global farmland. Animal-sourced foods account for most of agriculture’s environmental damage with beef and dairy having the greatest impact, contributing 29% of total carbon loss and 41% of biodiversity loss because producing them requires so much land. On average, animal-sourced foods were associated with eight times more carbon loss and 14 times more biodiversity loss per calorie than plant-sourced foods. “Our findings show they’re often the same problem on the same piece of land, with two-thirds of the carbon damage and two-thirds of the biodiversity damage from farming happening on just a third of agricultural land,” he said. “We link long-term damage to both climate (carbon loss) and nature (biodiversity loss) to foods we currently consume.