google FROZEN METHANE HYDRATE.
The worldwide amounts of carbon bound in gas hydrates is conservatively estimated to total twice the amount of carbon to be found in all known fossil fuels on Earth.
This estimate is made with minimal information from U.S. Geological Survey (USGS) and other studies. Extraction of methane from hydrates could provide an enormous energy and petroleum feedstock resource. Additionally, conventional gas resources appear to be trapped beneath methane hydrate layers in ocean sediments.
I find it strange how a supposed informed journalist never bothered to mention this energy source that makes oil reserves look tiny in proportion.
I am familiar with methane hydrates. Alaska has a huge quantity of this resource.