Last week, National Science Foundation announced this year's call for proposals for its Research Experiences for Undergraduates (REU) program. In this program NSF funds activities at institutions that engage and encourage undergraduates in hands-on research projects. REU Sites, as these activities are called, can focus on one discipline or cross multiple disciplines. Interested students should apply directly to the REU Sites--a list of REU Sites is on the NSF Web site--not NSF itself.
A second part of the REU program, called REU Supplements, provides funds for undergraduate researchers to participate in current NSF funded projects. Students participating in either REU Sites or Supplements must be U.S. citizens or permanent residents. GrantsNet has an overview of the announcement, while the NSF Web site has the full text.