Twelve colors and counting. The terminology associated with hydrogen—specifically, the use of color descriptors such as green, blue and gray—has become widespread in discussions about renewable energy ...

Plug Power, an American company engaged in the development of hydrogen fuel cell and electrolyzer systems, went public in 1999 to great fanfare. After shares initially sold for $15 each, their price ...

A novel dye-sensitized photocatalyst developed at Science Tokyo enables the capture of long-wavelength visible light for efficient hydrogen conversion, surpassing conventional photocatalysts.

Forbes contributors publish independent expert analyses and insights. Robert Rapier is a chemical engineer covering the energy sector. U.S. President George W. Bush, center, talks to reporters while ...