The US National Science Foundation (NSF) has expanded an international collaboration initiative for its graduate fellows. Fellows may now apply to spend 3–12 months at an institution in Norway, Finland, Denmark, Sweden, Japan, South Korea, Singapore or France, with a living allowance from the host nation and travel subsidized by the NSF. “In this era of science with more international collaboration and interdisciplinary work, we want to encourage our graduate students to step into those environments,” says Maria Zacharias, a spokeswoman for the NSF. Applications must be in by 1 February; awardees will be told in April.