This, found on GAB, is very clever, even if it’s not entirely accurate.
Click the image for a larger view.
Peter
Not quite accurate, but I still laughed out loud
The idle musings of a former military man, former computer geek, medically retired pastor and now full-time writer. Contents guaranteed to offend the politically correct and anal-retentive from time to time. My approach to life is that it should be taken with a large helping of laughter, and sufficient firepower to keep it tamed!
Last I'd heard the common wisdom is that most oil and natural gas deposits began as algae.
Apply enough heat, pressure, and time and you have crude oil.
Seems to be a good bit of research going on to duplicate the process on a vastly reduced timeframe.
Oil reserves seem to be much greater than first assumed, but it's still a finite resource. If we don't figure out how to reliably and dependably replace fossil fuels eventually things are going to get very dark and cold.
Relevant XKCD:
https://what-if.xkcd.com/101/