I don't doubt that we are going to burn every last bit of fossil fuel but that actually makes the apocalyptic visions more frightening. We have three things combining as a threat to humanity. 1. Global Food Supply 2. Global Oil Supply 3. Climate Change If we trust the UN research the global demand for food is going to be outstripping production by some point in the 40's. With the exponential growth in demand oil is going to be very expensive by 2050 and probably gone by 2060 and shale oil and the other options mentioned in this post are carbon intensive. By 2050 climate change is going to be effecting many regions of the world forcing people to move from islands and deltas and damaging food production with floods and droughts. China is going into this future with open eyes but the rest of the world seems incapable of looking past their respective elections. I'm encouraging my son to do Chemical Engineering and Agriculture, the youth of today have a big fight on their hands.
Islamist militants attack African Union base in southern Somalia (Reuters)
from the article: What happens in 50 years when the oil runs out?