What would happen if the World Runs out of Oil and Gas

Oil is hydrocarbons that grew up in the earth when source rock full of organic inclusions sank to just the right depth not too little and not too much and got cooked over the ages. It took hundreds of millions of years for the world's supply of oil to be created. The oil is used to make gasoline obviously, but also home heating oil, diesel fuel but also 90 percent of all the organic chemicals that we use. That includes pharmaceuticals, agricultural products, plastics, fabrics and so on. They are petrochemicals, meaning they originate as oil.

the need for those hydrocarbon materials has been increasing for 150 years and will go on increasing especially because the world's population is increasing. The poorer parts of the world want to increase their standard of living, which inevitably means using more energy. Fossil fuels are our principal source of energy.

I hope that enough people will become aware of the problem and we will be a little better prepared, Right now we don't have the kind of leadership that would take us in the direction that would make major changes. As individuals we can do things, driving hybrid cars, for example. But as a society we have to redesign cities so that people live close to where they work. There are all kinds of measures. We are so profligate in the use of energy that even with the smallest effort we can reduce the rate at which we use energy very significantly, as Californians showed after the last energy crisis. But what we really need is massive infusion of research on all of the possible ways of ameliorating this problem.

It's possible for us to revert either to natural gas or to coal or both. Among consequences are the increasing global climate change. But another consequence is, let us suppose you tried to substitute coal for oil. Natural gas is a good substitute and it will last for a while but it will have its own peak one or two decades after oil, so it's only a temporary solution. If you turn to coal, we're now using twice as much energy from oil as we are from coal. So if you want to liquefy coal as a substitute for oil in transportation which is its most important application you would have to mine coal at a rate that's many, many times at the rate of what we're doing now.