Hydrogen is a colourless and odourless fuel gas. It is not poisonous and, being very light - almost 15 times as light as air - it is easily dispersed. This is why in its free state it comes in very small amounts on the Earth - in the fumes of volcanoes, in geysers, and in oil fields.
Obtaining isolated hydrogen, i.e. not combined with other elements, requires energy. This is way hydrogen is not considered as a primary energy source, like coal, oil, or natural gas, but rather as an energy carrier, like electricity: a form of energy that is not found as such in nature.
Hydrogen is produced through different methods and compounds, starting for example from fossil fuels (coal, oil, or natural gas) or from water - after all, water is nothing but hydrogen and oxygen!
Renewable sources - like the wind or the Sun - can be exploited to obtain the necessary energy for its production, without releasing polluting agents into the atmosphere in the process. Research strives to find more and more efficient and cheap production methods.
The hydrogen world is a 2D educational animated video that shows in a nice and fun way what hydrogen is and how it can be created.
It is the first of a series of videos commissioned by the Italian Hydrogen Forum, dealing with all hydrogen-related issues - from production to storage to end use.