A research group at Penn State University announced last year that it is “only a couple of problems away” from perfecting a low-cost, scalable method for for water photoelectrolysis.  This technique uses visible light to convert water into hydrogen and oxygen.  The so-called “hydrogen economy” will need an effective technique for mass production of hydrogen, so this was a promising announcement.  However, experience has shown that those last little problems often turn out to be insurmountable.  Let’s hope this is an exception.

Read More [sciencedaily.com]