Neo-Carbon Food, a project of Finnish research group Neo-Carbon Energy, funded by the Academy of Finland, has produced its first batch of single-cell protein by combining microbes with carbon dioxide taken from air in an electrolysis process, using renewable electricity. The process, which took place in a reactor the size of a coffee machine, produced a spoonful of protein powder in a fortnight. Protein produced in this way can be further developed for use as food and animal feed, and made on-site wherever renewable energy, such as solar PV, is available.
This method releases food production from restrictions related to the environment. It's part of a wider project to devise a completely emissions-free energy production future that will help to alleviate world hunger.