July 9 is National Air Conditioning Appreciation Day! I really appreciate air conditioning as I sit writing in comfort even though we’re in the middle of summer, and it’s hot and humid outside. In the late 1700s, scientists, including Ben Franklin, learned that evaporation of alcohol and other volatile liquids can cool temperatures fast enough to freeze water, but it wasn’t until the early 1900s that this knowledge was put into a practical invention. Willis Carrier started the Carrier Air Conditioning Company to cool factories and manufacturing plants. The first home air conditioning unit was installed in a mansion in 1914, but we don’t know if it actually worked, because the house was never occupied. In 1931 individual window units were sold for the equivalent of $120,000 to $600,000 in today’s money. Affordable window units were offered in the 1950s, and central air conditioning became common in the 1970s. Today’s focus is on environmentally-friendly units, as Freon units are becoming obsolete. Celebrate today by staying cool!
Philippians 4:6-7 Be anxious for nothing, but in everything by prayer and supplication, with thanksgiving, let your requests be made known to God; and the peace of God, which surpasses all understanding, will guard your hearts and minds through Christ Jesus.
~N
Today's Kidlit Book 