The US National Science Foundation (NSF) and the Research Councils UK (RCUK) have signed a Memoranda of Understanding (MoU) on Research Cooperation. The MoU provides an overarching framework to encourage collaboration between US and UK research communities and sets out the principles by which jointly supported activities might be developed. The MoU provides for a lead agency arrangement whereby proposals may be submitted to either NSF (via FastLane) or one of the UK Research Councils (via Je-S). The NSF Directorate for Biological Sciences (NSF/BIO) and the Biotechnology and Biological Sciences Research Council (BBSRC) are pleased to announce a pilot program for the NSF/BIO - BBSRC lead agency arrangements under the NSF / RCUK Research Cooperation MoU. The pilot program allows for reciprocal acceptance of peer review through unsolicited mechanisms and its goal is to help reduce some of the current barriers to working internationally.  For more information, please visit http://www.nsf.gov/pubs/2014/nsf14034/nsf14034.jsp?WT.mc_id=USNSF_25&WT.mc_ev=click.