When it comes to oil and gasoline, unless there arises a cheaper option(even then, it will always be there), these commodities will be expended until they run out permanently... until these resources become rare enough to not become a reasonable means to use.
If these are the things that are causing global warming/climate change... I believe it is inevitable, no matter own many world conventions you have that us humans will expend every last drop of oil on this planet.
What can be changed? What can be stopped? What is worth fighting for when it comes to the environment?
In my opinion...
-toxic substances like pesticides, high sulfur content in coal, acids, toxic waste, mercury, arsenic, etc.
These are all substances, with good practices, that can largely be eliminated
-Deforestation, bad farming practices, errosion
All can be done with good farming practices and alternatives