Although global warming is a serious problem, many people's "solutions" for it aren't very practical largely because they don't seem very knowledgeable. For instance, that website says that renewable energy is "limitless". That's not true. Renewable energy is more flexible, because you have a much larger, purer source of energy, but there is still a fixed amount of energy that can be used (ex: the total amount of energy output of the sun over its lifetime).
Anyway, it's good to have a global cap and trade program to reduce emissions, but the Earth is going to continue to rise in temperature, climate will change, and we will simply have to adapt. Eliminating carbon emissions entirely is not a feasible option economically. Also, a global cap and trade program might be meaningless if underdeveloped countries don't have to abide by the same standards as developed nations. If the standards are unequal, it will basically be a means of wealth distribution to poor countries, so that they can pollute.
The best things in life aren't things.