A team led by Emily Elhacham, at the Weizmann Institute of Science, in Rehovot, Israel, performed a series of staggeringly difficult calculations and concluded that 2020 was the year in which the weight of “human-made mass”—all the stuff we’ve built and accumulated—exceeded the weight of biomass on the planet. That is to say, our built environment now weighs more than all the living things, including humans, on the globe.
Bill McKibben