I study fruit-eating bat migration in Africa. To understand their migrations, we need very precise data about their high-risk travel conditions. As part of the ICARUS project (International Cooperation for Animal Research Using Space), we have developed very effective transmitters fitted to bats to relay information to the International Space Station. This innovation is a giant step in the study of animal migration. It will give us a better grasp of how the climate is changing, how biodiversity is being preserved and how infectious diseases are spreading.