I already have the PERFECT idea. I have posted it before and I'll elaborate again:
CH4(g)+H2O(g)+heat<--->CO(g)+3H2(g)
The world figths wars for natural gas and petroleum. Yet, why would they need to do so if they have massive amounts of energy that shine over them everyday? Where is this energy? The Solar Rays from the sun.
You have probably seen the power of solar rays in your calculator that uses a solar cell.
If humans are able to "trap" this source of energy somehow then humans could use solar rays at their disposal to power cars, houses etc.
On a clear day 1 kJ reaches Earth's 1x1 meter of land ever second! The solar rays that fall on only 0.1% of the US's land is equivalent to all the power that the US currently uses.
So imagine how much power that is!
Do you have any ideas of how can light be trapped?
I was thinking of something involving glass but I want to know what you guys think