Hydrocane is a sugarcane like plant that can be harvested and then, through an extraction process, Hydrogen Gas can be produced and used to make lighter-than-air travel possible. In it's unrefined state hydrocane is a much more potent source of fuel for lighter-than-air travel than extracted hydrogen gas, but it produces a by-product that is damaging to the environment. Hydrocane doesn't actually produce hydrogen gas on it's own, it converts the pure hydrogen captured from the air and water around it through a process similar to Photosynthesis, and turns it into chemical energy so that it can be used to fuel the plants's activities.
Hydrogenis a chemical element with symbol H and atomic number 1. With an average atomic weight of 1.00794 u (1.007825 u for hydrogen-1), hydrogen is the lightest element and its monatomic form (H1) is the most abundant chemical substance, constituting roughly 75% of the Universe's baryonic mass. Non-remnant stars are mainly composed of hydrogen in its plasma state. At standard temperature and pressure, hydrogen is a colorless, odorless, tasteless, non-toxic, nonmetallic, highly combustible diatomic gas with the molecular formula H2. Naturally occurring atomic hydrogen is rare on Earth because hydrogen readily forms covalent compounds with most elements and is present in the water molecule and in most organic compounds. Hydrogen, being the lightest existing gas (14 times less dense than air), seems to be the most appropriate gas for lifting. Moreover, it is very cheap and easy to produce. Hydrogen is extremely flammable.