The 21st gathering of the Geosynthetic Research Institute (GRI) takes place today, 5 March 2008, in Cancun, Mexico. This marks the first time GRI has been held outside the United States. This year’s “Hot Topics in Geosynthetics” session offers agriculture and aquaculture papers and debate. The proceedings will be available for purchase from the Geosynthetic Institute (GSI) after the event.