1 December 2010 is the deadline for submitting proposals to SER2011, the 4th World Conference on Ecological Restoration, scheduled for 21-25 August 2011 in Mérida, Mexico. The theme is Re-establishing the Link between Nature and Culture. SER conferences address topics such as: the role of restoration in mitigating and adapting to climate change; reinstating landscape connectivity and reducing fragmentation; threatened and endangered species, populations and habitats; restoring natural capital; policy-making at the local, regional and national level; and traditional ecological knowledge and community-based restoration.