(a species of owlet moth (Noctuid)) Some caterpillars, after they emerge from their egg, can increase their weight by 25,000 times.

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Environment and ecology books

Energy: Use Less, Save More

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This book gives you over 100 tips for saving energy, money and the environment, plus ideas for taking energy saving further with solar installation or wind turbines. There are also facts about our energy use and its impact on our climate

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Energy Use Less Save More

£ 4.95

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Did you know that our demand for electricity grows by about 3% every year? And that almost 40% of the heat we buy to warm up our homes escapes through our walls and the roof if they're not insulated? We are using more and more energy: charging up mobiles and laptops; keeping rooms so hot we just wear short sleeves in winter; or leaving lights on whether we use the rooms or not. But the consequences of using so much so freely are causing our climate to change, and our energy bills to rise. There are many small things we can do which cost nothing but can make a difference.