There is no doubt that modern civilization was only possible due to fossil fuels. But that says nothing about how long we should continue to use them. Actually

There is no doubt that modern civilization was only possible due to fossil fuels. But that says nothing about how long we should continue to use them. Actually its just in the last very few years that alternative energies are competitive. This is really a development which happened in the last 20 years. And solar and wind can replace fossil fuels. In 2015, 30% of the German electricity was produced by regenerative energies, up about 5% from 2014. So in the next few years, it will be the largest part of energy production. We don't have to go to 0% CO2 emissions, having 10-20% gas power plants for filling gaps is absolutely acceptable, as long as the rest is CO2-free.