As the demand for protein-rich food increases with population growth and rising awareness of nutrition and health, traditional animal and plant-based protein sources that require arable land or freshwater put significant pressure on land and resources. Therefore, there is a great need for new, more sustainable protein sources. As the demand for protein-rich food increases with population growth and rising awareness of nutrition and health, traditional animal and plant-based protein sources that require arable land or freshwater put significant pressure on land and resources. Therefore, there is a great need for new, more sustainable protein sources. Biotechnology Agriculture Phys.org – latest science and technology news stories