The Stockholm Memorandum is a document signed in May 2011 by many Nobel Laureates based on the verdict from the trial of humanity, which opened the 3rd Nobel Laureate Symposium. The jury of Nobel laureates concluded that Earth has entered a new geological age, which it calls the Anthropocene, in which humans are the most significant driver of global climate change, and in which human collective actions could have abrupt and irreversible consequences for human communities and ecological systems. The memorandum was signed by 20 winners of the Nobel Prize or the Sveriges Riksbank Prize for Economic Sciences in Memory of Alfred Nobel was submitted to the United Nations High Level Panel on global sustainability.