in the United States, and 16,585 certified organic farms. Timeline 2006 The World Conservation Union's Red List of Threatened Species reports that most of the world's threatened species are experiencing habitat loss as a result of livestock production conducted through animal agriculture. Center for Science in the Public Interest releases Six Arguments for a Greener Diet that found that a plant-rich diet "leads to much less food poisoning, water pollution, air pollution, global warming." 2016 Research published in the journal Nature Communications finds that vegan diets have the best land use and are the only way to feed the global population by 2050. The World Resources Institute published the report: Shifting Diets for a Sustainable Food Future which showed that if people who consume large amounts of meat and dairy changed to diets with more plant-based meals could reduce agriculture's pressure on the environment. 2017 University of Edinburgh researchers find that animal farming is the leading cause of food waste as it is responsible for the most losses of all harvested crops on Earth (40%) due to secondary consumption. Forbes magazine publishes a compilation of recent vegan and plant-based business successes noting that vegan living is becoming more a norm because of its positive impact on sustainability. 2018 Research published in the Proceedings of the National Academy of Sciences find that a vegan shift would increase the US food supply by a third, eliminating all of the losses due to food waste and feeding all Americans as well as roughly 390,000,000 more. A Harvard study found that shifting all beef production in the U.S. to pastured, grass-fed systems would require 30% more cattle, increase beef's methane emissions by 43%, and would require much more land than is available. 2019 A report from the Humane Party determines that vegan-organic agriculture can be 4,198% more productive than animal-based agriculture in the amount of food produced per acre. Veganic farmer Will Bonsall told The Guardian that most vegetables are "very un-vegan" due to being grown using inputs of animal-based products. Advantages Livestock in the United States produce 230,000 pounds of manure per second, and nitrogen from these wastes is converted into ammonia and nitrates which leach into ground and surface water causing contamination of wells, rivers and streams. Mature compost of plant-based origins, used in animal-free agriculture, can reduce leaching of nitrate which leads to an improvement in groundwater quality and counteracts the