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Published online by Cambridge University Press: 22 July 2013
Gamma-ray bursts (GRBs) triggered by the death of the first stars promise to provide apowerful probe into the state of the high-redshift universe. I will review the basicphysics of how the first stars formed, evaluating whether they are suitable GRBprogenitors. After providing estimates of the high-redshift GRB number density, I willdiscuss the utility of such bursts in probing the ionization state, and the degree ofmetal enrichment, of the early intergalactic medium. The prospects for these studies arebright, provided that we can fly a dedicated mission that combines a gamma-ray detectorwith on-board near-infrared capabilities.