*decline of natural resources, particularly water

*collapse of ecosystems and loss of biodiversity

*human population growth beyond Earth’s carrying capacity

*global warming and human-induced climate change

*chemical pollution of the Earth system, including the atmosphere and oceans

*rising food insecurity and failing nutritional quality

*nuclear weapons and other weapons of mass destruction

*pandemics of new and untreatable disease

*the advent of powerful, uncontrolled new technology

* national and global failure to understand and act preventatively on these risks.