Humanity Has Killed 83% of All Wild Mammals and Half of All Plants: Study
Of all the birds left in the world, 70% are poultry chickens and other farmed birds. When it comes to planet Earth, humans are very tiny. The weight of all 7.6 billion humans makes up just 0.01% of all biomass on Earth, according to a report published in the Proceedings of the National Academy of Sciences on Monday. Bacteria, by comparison, make up 13% of all biomass, plants account for 83%, and all other forms of life make up 5% of the total weight, according to the report.