The total biomass of wild mammals has decreased by 82 percent, while humans and their farm animals now make up 96 percent of all mammalian biomass on Earth.[1] Additionally, since 1992 the land requirement for human settlements has more than doubled worldwide;[21] and humanity has rendered 23 percent of Earth's land ecologically degraded and no longer usable.[3] Industrial farming is considered to be one of the major contributors to this decline.[22] Around 25% of the planet's ice-free land is being used to rear cattle for human consumption.[8]