Lol! (Has never really taken physics either, but loves all things science and engineering. Despite what the song says, the internet is for more than just porn.)
What really needs to happen is an efficiency boom. We went through a tech boom, which has increased our energy demands. One of the rules concerning entropic energy in a system, is that it always requires more energy to overcome that entropy. (Eg, the AC unit you run in the summer creates more heat than it removes from your house, to satisfy this law. The unit is simply designed to spew that heat along with the concentrated heat it pulled from the inside of your house, outside.)
The same is true for electronic devices. This is why overclocking a cpu requires far more power, and far better cooling. The harder you drive the circuit, the more energy is required to overcome thermal noise, and as a result, more and more entropic heat is created, and more energy to transport that heat away is required.
The same would eventually be true for the earth-sun system. Humans have a demand for more and more energy, which is directly tied to the ammount of entropy already in the system at some level. Adding more energy to overcome the entropy will creating more entropy, requirng ever greater ammounts of energy, until the earth cooks like a christmas goose.
Increasing the efficiency of our existing technology will reduce the rate that the energy is converted into entropic waste. Things like superconducting powerlines would radically change the way we think about energy, for instance. (Right now, more than half the energy produced by any given power plant of any technology is bled out as passive emissions of entropic energy of one form or another before being used to do work.)
When we start really requiring more energy to be in the system, we need to also create a means for that extra energy to leave the system, or suffer being cooked.
Removing greenhouse gasses is one way. Another is using an orbital tether (aka, a space elevator) as not only a convenient launch system, but also as a direct blackbody emitter. (You concentrate the heat energy in the transfer station, and beam the heat as IR directly into space. Being near the emitter surface would cook you.
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The safest way is to realize that the earth has a fixed energy equilibrium, and advance within those means, and move energy expensive operations off planet where there isn't an insulating atmosphere, or where the increased thermal output would be highly beneficial (say, some other celestial body, like the moon.)
It is important to understand that nature is already a very efficient exploiter of local maxima. This means that the "natural" state of the earth has already reached a very efficient system to deal with all the ins and outs of energy use. Human activities often consider nature to be too constraining, and seek to puncture the equilibrium. It is important to realize that there are very real complications associated with doing that.