How does hydrogen energy reduce pollution?

Hydrogen energy reduces pollution primarily by producing water vapor as a byproduct when used in fuel cells, rather than harmful emissions like carbon dioxide or nitrogen oxides associated with fossil fuels. Additionally, when hydrogen is produced through renewable methods, such as electrolysis powered by solar or wind energy, it minimizes greenhouse gas emissions during its generation. This clean energy source has the potential to significantly lower air pollution levels, contributing to improved public health and a reduction in environmental degradation.