How hydrogen reduces global warming and pollution?

Question

How hydrogen reduces global warming and pollution?

Answer 1

Triatomic molecules (including water and carbon dioxide) all contribute about equally to the greenhouse effect.  But the water content of our atmosphere is already in natural equilibrium.  Adding water vapor by burning fossil fuels or hydrogen does not change that.  Carbon dioxide, on the other hand, is NOT in equilibrium.  Adding a small amount of carbon dioxide by buring fossil fuels DOES raise overall temperature.  The temperature change may in turn change the equilibrium point for water vapor, causing a "magnifying" effect on the greenhouse phenomenon.  

Unlike the burning of fossil fuels, the burning of hydrogen cannot produce carbon dioxide.  Nor can it produce carbon monoxide.  But it CAN still cause oxides of nitrogen, which cause smog and acid rain.

Using hydrogen as a nuclear fuel (to make helium) in a closed fusion reactor is currently not a technologically viable process.

Answer 2

Hydrogen is a fuel used in Fuel Cells - along with oxygen - (which can either be installed as an energy source for cars or homes). While it is a renewable resource and good alternative energy source, fuel cells still produce carbon dioxide, but it produces 1/3 less CO2 than fossil fuels.

Answer 3

That's almost a question...

Besides our only 'greenhouse gas' to worry about is water vapor.  Oh.  Look at that.  If we had no water vapor in the air the planet would be approx. 14 degrees cooler.  Funny how that works... and C02 isn't going to end the world.  There isn't enough of it in the atmosphere.  Granted it is higher than before industrialization, but not nearly high enough. Averaging 380 parts per million.  Three hundred eighty, in one million.