Peta- (symbol: P) is a prefix in the metric system denoting 10¹⁵ or 1000000000000000. For example:

1 petametre = 10¹⁵metres
1 petasecond = 10¹⁵seconds
1 petabyte = 10¹⁵bytes

Adopted in 1975, it was derived from the Greek πέντε, meaning "five", because of the five in 1000⁵, for which it stands. The peta- prefix is similar to the penta- prefix (for "five"), but without the letter n. This omission is modelled on the way the similar tera- prefix (actually from Greek τέρας = 'monster') for 1000⁴ seems to omit a letter from the tetra- prefix (for "four").

Examples:

In computer science peta- can sometimes mean 1125899906842624 (1024⁵ or 2⁵⁰), instead of 1000000000000000, especially when used to prefix the byte, giving a petabyte. To resolve this ambiguity, the term pebibyte has been suggested to mean 2⁵⁰bytes.

Meet Your Meat is a documentary about factory farming created by People for the Ethical Treatment of Animals (PETA), narrated by Alec Baldwin, and directed by Bruce Friedrich and Cem Akin. The documentary explores the treatment of animals in modern animal agriculture (also known as industrial agriculture or factory farming). The film runs 12 minutes long.

The film documents several cases of cruelty to animals, including:

Meet Your Meat helped influence Burger King to adopt more humane policies.

Michael Gregory "Mike" Rowe ( /ˈroʊ/; born March 18, 1962) is an American media personality best known as the host of the Discovery Channel series Dirty Jobs. He can also be heard as narrator on a variety of series and has appeared in recurring commercials for Ford Motor Company.

Rowe was born in Baltimore, Maryland to parents John and Peggy Rowe. Rowe has said in commercials for Dirty Jobs that the show is a tribute to his father and grandfather. Rowe became an Eagle Scout on January 2, 1979 in Troop 16 in Baltimore. During his service project for Eagle Scout at the Maryland School for the Blind, he read aloud to students, and he cites this as one of the reasons he became interested in narrating and writing. On being an Eagle Scout he said "The Eagle Award is not really meant for people who need to be dragged across the finish line. It's meant for a select few... ."'

Rowe attended Kenwood Presbyterian Church in Baltimore when he was younger; his parents still regularly attend. Rowe attended Overlea High School, where he excelled in both theater and singing under the tutelage of choir director Freddie King, whom Rowe credits for first interesting him in performing. An early stutterer, Rowe was able to overcome the handicap while in school. After graduation from high school, he attended Essex Community College, and briefly sang with the Chorus of the Chesapeake, which at the time was directed by King. He later graduated from Towson University with a degree in Communication Studies.

Michael Trent Reznor (born May 17, 1965) is an American singer–songwriter, composer, and record producer. As both a vocalist and a multi-instrumentalist, Reznor has led the industrial rock project Nine Inch Nails beginning in 1988, and as of 2010 he and his wife, Mariqueen Maandig, are also members of the post-industrial band How to Destroy Angels alongside fellow composer Atticus Ross, with whom Reznor has scored two films. Reznor was previously associated with the bands Option 30, Exotic Birds, and Tapeworm, among others. Reznor left Interscope Records in 2007, and is now an independent recording artist.

Reznor began creating music early in his life, and cites his Western Pennsylvania childhood as an early influence. After being involved with a number of synthesizer-based bands in the mid-80s, Reznor gained employment at Right Track Studios in Cleveland, Ohio and began creating his own music during the studio's closing hours under the moniker Nine Inch Nails. Reznor's first release as Nine Inch Nails, Pretty Hate Machine (1989), was a commercial and critical success, and he has since released seven major studio releases. Outside of Reznor's chief project Nine Inch Nails, he has contributed to many other artists' albums, including Marilyn Manson and Saul Williams. In 1997, Reznor appeared in Time magazine's list of the year's most influential people, and in Spin magazine he was described as "the most vital artist in music."