A way of turning simple plant sugar into a fuel as powerful as petrol has been discovered by scientists.
Researchers in the United States have developed a way of converting fructose, the sugar that gives apples and oranges their sweet taste, into a fuel that can be burned to generate energy.
For years, chemists have been searching for a way to sidestep the use of crude oil as the root source of chemicals for fuels, aiming to replace it with inexpensive, non-polluting plant matter that is more environmentally friendly.