Events: Fossil fuel depletion
_Graph source: https://www.ecotricity.co.uk/our-green-energy/energy-independence/the-end-of-fossil-fuels_
Technological developments:
Aerosolar travel
_Image source: http://aerocene.org/aug-27-schoenfelde-germany/_
Infinite clean energy from nuclear fusion -not the current fision.
_Graph source: ITER - Wikipedia