Extracting hydrogen from Urine requires less energy
It may sound gross to some, but Gerardine Botte of Ohio University claims to have found a way to extract hydrogen from urine. Most of the hydrogen currently available is extracted by reforming natural gas with steam and this process is rather energy intensive. Botte claims that it requires much lesser energy to extract hydrogen from synthetic urea or real human urine. Considering the abundance of urine available on our planet, scaling up this process will increase the amount of hydrogen generated and also solve the eternal problem of sewage treatment.