Authorities confirm methane gas caused last month’s explosion in Johannesburg city, which killed one person and injured several others.

A fuel cell uses chemical energy from fuels, like hydrogen, propane or diesel, to produce electricity. Fuel cells can use a wide range of fuels and have a wide range of applications.

Hydrogen is a fuel source that is a possible alternative to fossil fuels. It can be used in fuel cells and to create heat, and its only by-product is water, meaning it does not release any greenhouse gases when burned.

Hydrogen is gaining international attention as a potential green alternative to fossil fuels. This is because hydrogen can be “green” when produced using renewable sources.

Compressed natural gas (CNG) is natural gas that has been compressed to less than one per cent of its volume. The gas is compressed when it is stored at very high pressures.