Sunlight shines on a shiny wooden floor in an empty room, while a room air conditioner keeps things cool. Hot summer days and muggy nights can be uncomfortable, which is why many people install room air conditioners.
Down is the natural insulating layer found under the feathers on ducks and geese, and makes for very comfortable bedding! Down comforters are naturally warm in the winter and cool in the summer.
Osteospermums, commonly known as African Daisies, come in several colors including white and dark pink like those shown growing here in southern California. Osteospermums are perennials that thrive in sunny locations where the nights are cool.
Room air conditioners are typically used to cool one or two rooms and are inexpensive alternatives to central air conditioning systems. Most units are designed to fit conveniently in a double-hung window.
Why did the oceans warm and cool at such different rates in the early 20th century? New research points to an answer both as mundane as a decimal point truncation and as complicated as global politics. ...
Science Daily. Wed, 17 Jul 2019 14:26:39 EDT.
The reason some passengers weep uncontrollably or order strange beverages in the sky might be related to high levels of noise and air pressure in the cabin.
Josh Axelrod. NPR. Sun, 14 Jul 2019 15:35:02 -0400.
Woodford, Chris. Cool Stuff and How It Works. New York, NY. Dorling Kindersley. 2005.
Woodford, Chris, and Jon Woodcock. Cool Stuff 2.0 and How It Works. London, England. Dorling Kindersley. 2007.