each family throws away more than 1,000 dollars of food every year 20 to 25 per cent of all the food that they buy Some of that unwanted food has come in ships from the other side of the world. So next time you go shopping, it may be a good idea to eat something first! Energy at home Imagine two power stations working 24 hours a day, 365 days a year. That is how much energy people in Britain waste by leaving things like TVs on standby (turned on and ready to use). Did you know that leaving a TV on standby all day can use the same amount of power as watching it for an hour? How many machines are on standby in your house? Can you turn any of them off? When you turn on a normal light bulb, only 10 per cent of the electricity it uses turns into light the other 90 per cent is wasted as heat. Using energy-saving light bulbs saves 80 per cent of that electricity, and you can use them for much longer too. Do you like to heat your house to 26 °C in the winter or cool it to 18 oC in the summer? Half of the energy that we use at home is used to heat or cool the house. You can save a lot of energy if you keep your house at 22 Call year and p on warmer or cooler clothes. It also takes a lot of energy to