Originally Posted by Dude
Plus, there is historical precedent to fall back on, where an environmental catastrophe triggered by humans led to a response and solution. We no longer burn coal or whale oil in our homes. Despite producing 25% of the world's commercial timber, US deforestation is no longer an issue, with forest coverage stable since 1907. Etc.

I just want someone to tell me how much energy we can reasonably expect to gather from solar, geologic, and tidal forces on a regular, sustained, and reliable basis.

Some people still burn wood in their homes. I know, because I've given wood (from an unused wood pile) away to wood-burning people. Because they are dirt poor.