The ideal answer would be words, but that's not always the case for those who want to find the truth. Truth may involve sneaking around, getting information through others, etc. But really, to find...
To power homes with heat and electricityFuels for cars
It could be used for keeping you warm outside, or for sitting on inside. A Chesterfield coat, or a Chesterfield sofa.
it could be used in cars phones and laptops.
When the President doesn't like a bill which can be overturn with a 2/3 Majority by but house of congress