There are people who are mimicking the energy-harvesting device inside of purple bacterium, the people at ASU. Even more interesting, lately, in the last couple of weeks, people have seen that there's an enzyme called hydrogenase that's able to evolve hydrogen from proton and electrons, and is able to take hydrogen up -- basically what's happening in a fuel cell, in the anode of a fuel cell and in a reversible fuel cell.
Orang-orang ini meniru perangkat pemanen energi di dalam bakteri ungu, orang-orang di ASU. Lebih menarik lagi, baru-baru ini, beberapa minggu terakhir, orang-orang telah mengetahui ada enzim bernama hidrogenase yang dapat menghasilkan hidrogen dari proton dan elektron. Enzim itu dapat menggunakan hidrogen -- pada dasarnya itu yang terjadi di sel bahan bakar, di anoda sel bahan bakar dan di sel bahan bakar reversibel.