Feed and food are identified as the major contributor to land occupation, primary production use, acidification, climate change, energy use and water dependance. The productions of fishmeal or soy meal are mainly linked to these impacts. Currently insects are being considered as a new protein source for animal feed and human food. Insects can be fed by-products whose elimination has an economic and environmental cost. In addition, in comparison with to conventional livestock, insects have a higher feed convertion efficiency, higher fecundity, are mostly omnivorous and take up less space in the rearing process. Therefore, mass rearing insects can help to reduce the environmental contamination and transform waste into high protein feed or food. This session will analyse the potential use of insects in animal feeding and as a human food, studying mass insect rearing technologies, safety aspects, nutritive values and environmental aspects.