 Dangerous online activity can spread as quickly as drug-resistant bacteria across borders. Greenhouse gases pumped out in one corner of the world can cause storms in another. We increasingly face complex risks that have global consequences. The World Economic Forum Global Risk 2013 report analyzes the perceived impact, likelihood and interconnection of 50 global risks. We divide these risks into five categories, economic, environmental, geopolitical, societal and technological. The report identifies five centers of gravity. They are the risks which have the most knock-on effects and there is one for each risk category. They are major systemic financial failure, failure of climate change adaptation, global governance failure, water supply crises and critical systems failure. The report examines three main risk cases, testing economic and environmental resilience, digital wildfires in a hyper-connected world and the danger of hubris on human health. The report also highlights five X-Factors emerging concerns with uncertain consequences. These are the costs of living longer, runaway climate change, significant cognitive enhancement, the rogue deployment of geo-engineering and the discovery of alien life. This year's special report focuses on national resilience, laying the framework for a new tool to measure how well countries are likely to weather global risks. The Global Risk 2013 report provides the opportunity to explore today's risks and to join the conversation on developing a more resilient world for tomorrow.