What happens when the oil runs out and how does a small Island adjust and survive?
Those questions and others will be explored at the Manx Museum this evening.
Founder of the Ecological Building Network, Bruce King, has flown to the Island from California for the talk.
He says many people probably don't realise how essential oil is:
John Wannenburgh: 'Commitment, compassion and an unwavering sense of duty'
Tributes following the unexpected death of Douglas North MHK
Manx Utilities 'deeply saddened' by death of chairman
Wannenburgh praised for 'exceptional' leadership
"Tynwald will be a less colourful place without John" says president
Watterson describes Wannenburgh as 'devoted' to constituents
Douglas North MHK pays tribute to 'amazing friend'
Wannenburgh had 'biggest heart of anyone I've ever met' says Ashford