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One action society needs to take is to use energy much more efficiently. Instead of incandescent light bulbs, you could switch to LEDs that consume a lot less electricity, for example.

I hope that energy-efficient LED light bulbs will help reduce energy use and lower the cost of lighting worldwide.

The promise of energy savings, reduced carbon emissions and affordable lighting was there from the inception. The proliferation of the technology into areas such as displays, automotive, medicine and horticulture was unexpected.

Our problem right now is that we're so specialized that if the lights go out, there are a huge number of people who are not going to know what to do. But within every dystopia there's a little utopia.

We've gone from thinking the fuels that powered our growth were inexpensive, inexhaustible and benign to understanding they are exhaustible, expensive and toxic. Once you frame the problem that way, people will look at solutions differently.

I believe that it is impossible to stop people from using the fossil fuels, so we need to develop technologies which allow us to use them without creating environmental havoc on the planet.

The LED light bulb is more than ten times the efficiency of regular incandescent lighting, so it can save the world hundreds of billions of dollars in electricity costs.

Light is the task where many share the toil.

Practically every environmental problem we have can be traced to our addiction to fossil fuels, primarily oil.