I WONDER - How Can Hydrogen Produce Electricity?

Hydrogen fuel cells generate electricity through a chemical reaction between hydrogen and oxygen, producing only water and heat as byproducts, making them environmentally friendly. Unlike fossil fuels, they do not emit harmful substances like carbon dioxide, thus not contributing to climate change.

How does the process of using hydrogen fuel cells differ from burning fossil fuels?

What environmental impact does the use of hydrogen fuel cells have compared to fossil fuels?