Human crews headed for Mars are still looking at journeys that last most of a year, long enough for radiation, boredom and ...

Plug Power's latest price target revision reflects a subtle but important shift in how analysts view the stock's long term trajectory, as easing financial conditions and a healthier clean tech ...

Plug Power Inc. has postponed a key shareholder meeting, bringing the company's strategy for raising new capital into sharp relief. The hydrogen technology f ...

When liquid water freezes, it expands by about 10%. This phenomenon is quite unusual in nature. But why does water increase in volume when it ...