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NSF has a sustainability initiative, inviting collaboration across disciplines. The PIRE program, which supports international collaboration, has a sustainability focus this year. The opportunity demonstrates the commitment at NSF to problem-centered, cross-disciplinary work.http://www.nsf.gov/funding/ pgm_summ.jsp?pims_id=504707 The RCN could also be particularly helpful for those who have ongoing research projects people wish to coordinate. Some of our more junior colleagues might find the Fellows program especially appropriate.