Production of carbon neutral fuel - biodiesel - from cooking oil, animal fat and plants.
A glass of iced water in the sun is used to illustrate three types of thermal transfer.
An investigation into the use of fossil fuels and their impact on the environment.
Mixing hydrogen with oxygen in a fuel cell can generate electricity to power a vehicle.
A race to sort materials for recycling between a young girl at home and a recycling plant.
A look at renewable sources of energy which are replenished or available for a long time.
Tongland Power Station generates hydroelectricity from the power of the River Dee.
The pros and cons of using wave power to generate electricity.