Why is it important to use substitute energy?

So, suppose the nightmare scenario were to come true. We learn that, provably: Fossil fuels are running out fast and will be entirely exhausted in the next few decades with no possibility of discovering more. Renewable and alternative energy sources...

http://www.anga.us/srdlanding http://www.anga.us/why-natural-gas/clean http://cata.aga.org/ They All Unfailingly Cite How Long the Supply is Projected to Last (Typically ~100 Years), Which Reveals the True Intent Here. Now, I Have Long Seen Natural Gas...

I am trying to build an Exposure unit to start a silk screening business. All the plans and information for the units call for T12's. The only problem is that with the phase out of the T12 called for by the US department of Energy I can not find the...

I need to convert a certain amount of energy (1.2 x 10^27 J) into mass, but I'm not sure how to do this? do i use e=mc2 because i dont have any other values to substitute into the equation?? please help!!!

Getting the average Joe to reduce energy consumption by 50% would probably not reduce household energy consumption by 50% in the US. The reason is that there a few households that use an egregious amount of energy, and if they don't cut back, energy...

I am looking for the following to carry out lifecyle cost calculations on cars :- - Energy use per km for gasoline-fuelled internal combustion car - Energy use per km for gasoline-fulled fuel cell car - Energy use per km for hydrogen-fulled fuel cell...

For example, font and graphics on a printed book use up ink, which is a resourse and costs money. Mailing a physical letter uses up the Mailman's gasoline and uses resources and costs money. Does text on a computer screen use up energy or resources?...

1) The rate of energy use in a typical house is about 2 kW. If the kinetic energy of a car (mass 1526 kg) is equal to the total energy used by the house in 1 min, what is the car's speed? _______m/s 2) A tennis ball (m = 55 g) is projected vertically...