Mathematics and Machining ...................................................................................... 219 Multiplying Decimals .................................................................................................311 Floor Plan Area Calculations ..................................................................................... 313 Division of Whole Numbers ....................................................................................... 379 Calculating the Cost of Electricity ............................................................................... 441 Converting Binary Numbers ...................................................................................... 504 Food and Calories ................................................................................................... 564 Cost Estimation ....................................................................................................... 595 Think Green Think Green Green Technology ...................................................................................................... 11 Eco-Friendly Paints .................................................................................................... 36 Sustainable Design .................................................................................................... 55 Microgeneration ....................................................................................................... 134 Disposing of Biodegradable Products Responsibly ....................................................... 147 From Plastic Waste to Clothing ................................................................................. 157 Aluminum: A Sustainable Material .............................................................................. 226 Composting............................................................................................................. 246 Green Roofs ............................................................................................................ 295 Sustainable Lumber ................................................................................................. 333 Green Lubrication .................................................................................................... 366 Transportation Alternatives ........................................................................................ 388 Renewable versus Green Energy ............................................................................... 427 Green Power ........................................................................................................... 434 Recycling Electronic Devices ..................................................................................... 464 Space Trash ............................................................................................................ 503 Medical Technology and the Environment ................................................................... 570 Green Product Analysis ............................................................................................ 592