Investing in Hydrogen

Hydrogen is the most abundant element in the universe.

Air Liquide - http://www.airliquide.com/en/corporate/sustainable/hydrogen.html - The French gas behemoth. They trade in Europe, but you can access them through ETF's such as the iShares France (EWQ), which has 2% of their holdings in AI.

Air Products (NYSE: APD) - http://www.airproducts.com/h2energy/ - International gas and chemical corporation. One of the largest producers of hydrogen, the Air Products also provides the liquid hydrogen and oxygen fuel for the Space Shuttle.