CDC public service announcement. A PSA from the CDC regarding H1N1 prevention. A public service announcement (PSA) or public service ad, are messages in the public interest disseminated by the media without charge, with the objective of raising awareness, changing public attitudes and behavior towards a social issue.
This article includes a list of references, related reading or external links, but its sources remain unclear because it lacks inline citations. (May 2015) (Learn how and when to remove this template message) Isolated Power or ISO is a sabermetric baseball statistic which aims to measure a batter's raw power. The formula is slugging percentage minus batting average. The final result measures how many extra bases a player averages per at bat.
Baseball Equipment. Widely known as America's Pastime, baseball is a sport that requires stamina, speed, aim, and strength. The game is played by two teams; one team bats in an attempt to score points, or runs. The other team tries to block them from doing so. The main focus is on the pitcher and the batter and proper sports equipment is required. A game with minimal equipment, all you need is a bat, ball, glove, and some open space. However, this is a game in which the ball travels at a speed of over 100 miles per hour, so safety is a major concern, and players need to wear certain pieces of protective gear. Since baseball equipment is made from some pretty expensive materials, the gear is on the costly side.