This event was supported by the National Science Foundation (USA) and the European Commission for strengthening international collaboration and interaction on critical zone science.

The overarching goals of the workshop were to:

• Encourage international collaboration in developing the agenda, vision, and execution of the next five years of critical zone science.
• Promote core project proposals that seek to develop "satellite" NSF-funded CZO sites within the growing and emerging CZO network.
• Encourage core project proposals that will take advantage in novel ways of the emerging CZO infrastructure
• Promote cross-cutting research proposals that integrate the social sciences with the natural sciences in the global CZO network, something is prominent in the SoilTrEC program.

The workshop included a poster session. The intent of the poster session was to provide information on existing or potential study sites that could be included in an expanded network of CZOs.

On the final day of the workshop, the scientists headed into the field to tour the Christina River Basin CZO, the 565-square-mile watershed in southeastern Pennsylvania and Delaware which is being closely studied by researchers at the University of Delaware and the nonprofit Stroud Water Research Center in Avondale, Pa.