“Humanity’s global median trophic level was 2.21 in 2009, which puts us on a par with other omnivores, such as pigs and anchovies, in the global food web. … closer to herbivore than carnivore. … An increase in fat and meat consumption has moved us further up the food web … If we all increase our trophic level, we’ll start to have a bigger impact on ecosystems” (

We may have to rethink pizza toppings.