Are they the reason for the building of new power stations?
The size of your pet's greenhouse impact will depend on the type and size of animal, what you feed it, trips to the vet or obedience school, the products you buy for it and many other factors.
Halogen downlight bulbs can be replaced by a range of simple, plug 'n' play alternatives.
Today paper manufacturers and their customers are considering a broad range of issues from fibre sources to chemical use.
It's a great idea to capture the free heat from the Sun, and double-glazed windows can help trap the warmth in cooler months. But can they impede other forms of passive heating?
Properly maintaining air conditioning systems will allow them to last longer and use less electricity.
Halogen bulbs advertised as 'high intensity' are either those with an infrared coating that enables them to use less power.
Choose the right type of lighting for your needs.