The ongoing energy debate, due to the environmental destruction that can be directly linked to the use of known fossil fuels, has led to us being forced to find new sources of energy. All fossil fuels such as all oil and natural gas that come from the ground contain carbon, which turns into carbon dioxide when burned. Everything that contains carbon that we then burn in different ways, leads to us not reducing carbon dioxide emissions, but in most cases increasing them.

With an increasing population globally, the need for means of transportation for private individuals, commercial vehicles, shipping and aircraft grows. This increases the need for fuel for this growing fleet. In other words, with a larger global population there is also an increasing need for fuel. Recently, it has become increasingly apparent that our way of life affects the climate. In some parts of the world, climate change leads to droughts and huge forest fires while other parts are hit by huge rainstorms that lead to floods. Research is going on in several places in the world and new technologies for all these means of transport are at the top of the agenda. Alternative fuels have been researched and some are already in use, others are still more or less in project stages. Electrification of different types of vehicles is something we are seeing more and more, these vehicles are still relatively expensive and may not yet be accessible to all the public, the range of these vehicles is also still not quite like that of traditional petrol and diesel vehicles. Furthermore, the production of electricity is also not always solved in a completely environmentally friendly way. Other fuels that can be mentioned are, biofuels, which are residual products from our household waste and agriculture. Alcohol or ethanol is a fuel that has been around for quite some time as a supplement to gasoline-powered cars. Rapeseed oil is also an alternative to fossil fuels. None of these alternative fuels increase carbon dioxide emissions but keep them at a neutral level. They are part of the natural cycle.

Hydrogen has been researched during various periods in our world history. One relevant question is why research seems to have progressed at certain times and then slowed down only to later start up again. Hydrogen vehicles that run on so-called fuel cells are starting to appear in some parts of the world, though, not as common as passenger cars in Sweden. However, in public transportation, such as bus traffic you see them appearing a little here and there. Even today, you can't go in and buy a car or truck with an internal combustion engine that runs on hydrogen, but some manufacturers are close to a finished vehicle.