As delegates begin arriving in Lima for the start of COP20/CMP10 on Monday, a new report from the Royal Society underscores the need for more urgency in climate change mitigation negotiations.  The Royal Society, which was founded in 1660 and serves as the United Kingdom’s independent scientific academy, released today Resilience to Extreme Weather, which projects the human impacts of coastal and river flooding, droughts, and heat waves using data provided by the IPCC in its recently published AR5.  The report also provides an on-line “chart of defensive options,” through which the user may explore different policy options for reducing the impacts of these four extreme weather events and determine each option’s effectiveness and cost. The Royal Society, along with BirdLife International, will host a side event at COP20 on Friday, December 12, 11:30am-1pm, to encourage policymakers to look beyond “traditional engineering options” to adaptation policies and practices based in ecosystems management.