Earth-system science and ese (continued: we can do earth systems management, but should we do it, moral question. Risk management taking care of the earth is all about risks: ese is all about risk management. Risk analysis and risk management: all about how to mitigate hazards, how to mitigate a geological hazard, ex. Earthquakes (chapter 2: earthquakes in the past that have caused 100,000 deaths or more, 2004 indonesia: ~250,000, 2010 haiti: ~300,000, 2011 japan: Tsunami concern about the nuclear plants h+ explosion fukujima. Car crashes in snow storms: resource something that is useful to us. Distinguish hazard from resource: everything can be a resource or a hazard, water. Normally think of it as a resource: hydroelectric power. Sometimes it"s a hazard: flooding, drought. Look at it as a resource and hazard: poison -> hazard, remedy -> resource, sewer gas (hydrogen sulphide) Remedy can help regulate blood pressure.