Computers are more reliable and they last longer when they're left on all the time.
False. The theory was that thermal cycling, from powering computers up and down, stressed and broke the components. The fact is that thermal problems are usually from heat buildup and/or poor ventilation. In any case, it's always better to shut the machine down for energy, security, and operational reasons. Experts agree - shut it off when you leave for the day.
Appliances don't use power while in stand-by mode.
Photovoltaic panels will never generate more energy than was used in their manuf...
Showering uses less energy than taking a bath.
Windmills kill a significant number of birds, bats, and moths.
Turning the heat down at night doesn't save any energy because you just have to ...