1.   Fuel cells take hydrogen from another fuel source, such as natural gas, and convert it into electricity.

2.   German industry, however, is taking hydrogen seriously and is trying to solve these problems.

3.   That is because fuel cells take hydrogen and combine it with oxygen from the air to generate electricity.

4.   Fuel-cell cars run on electricity produced by taking hydrogen from a liquid such as methanol or gasoline, and combining it with oxygen from air.