This is probably one of the most simple changes that can be made to be just a bit more environmentally friendly. Heating and Cooling systems in the U.S. together emit 150 million tons of carbon dioxide into the atmosphere each year. By turning the thermostat back 10-15 degrees at night, it can save about 5-15% a year on your heating bill.
In warm weather, set the thermostat at 78degrees, and in cold, set it to 68degrees. It’s not all that hard to put on some warmer clothes or to turn on a fan. I’m sure you won’t be complaining when your heating/cooling bill isn’t as high. If you really want to go nuts, set the thermostat for 85degrees when no one is home during the day in the summer and down to 55degrees at night in the winter. An extra blanket never hurt anything.
At home, I can’t control the temperature of the house, I can only ask my mom to follow these guides, but at school, as long as it’s alright with my roommate, I can easily do it. Air conditioning and heating systems weren’t always around, and there are plenty of fun and creative ways to cool down, so don’t be lazy, and while it doesn’t cost me anything extra to blast my heat or air conditioning at school, why not save them a little money?