The twenty-three amino acids are the molecular building blocks of protein. The amino acids can be divided into two groups: essential amino acids and non-essential amino acids. The nine essential amino acids are so designated because they must be supplied by the foods we eat.
Rush Limbaugh is the longest reigning ratings leader in all talk radio. Rush is the perennial Premiere Radio Networks' top nationally syndicated radio talk show reaching nearly 20 million listeners weekly on 600 plus stations. Rush has ruled the talk radio ratings for more than two decades.
This includes live streams of traditional radio broadcasters as well as music sites such as Pandora. A recent survey has indicated that internet radio usage in the United States around 60 million people listen to internet radio, a figure which is expected to rise to as much as 77 million by 2015.