Insulin is needed to turn the sugar in food into energy.

Another current study is the process of changing waste into energy.

Matter can be converted into energy, but always with mass loss.

Some of which are described as being converted into energy for time travel.

Finally one of the older kids said, "It means that mass can be converted into energy."

Well, I used to design the things that turned sunlight into energy out in space.

In the same way, they can turn motion into electrical energy.

And what about that stuff lying around waiting for someone to think it into energy?

He argues for more research into alternative energy and nuclear power.

He said that mass could change into energy (or the other way around).