Ancient DNA in ice, such as the Ötzi the Iceman (Handt "et al." 1994), or through rapid desiccation, such as high-altitude mummies from the Andes (c.f. Pääbo 1986; Montiel "et al." 2001), as well as various sources of artificially preserved tissue (such as the chemically treated mummies of ancient Egypt). However, mummified remains are a limited resource. The majority of human aDNA studies have focused on extracting DNA from two sources that are much more common in the archaeological record – bone and teeth. Several other sources have also yielded DNA, including paleofaeces (Poinar "et al." 2001) and hair (Baker "et al."
Twenty Years Ago more simple and possibly better life was back then. He mentions the old movie house and the drug store where he worked and his childhood friend who died in Vietnam in 1964. Twenty Years Ago "Twenty Years Ago" is a song written by Dan Tyler, Wood Newton, Michael Noble and C. Michael Spriggs. It was recorded by Juice Newton for her 1983 album "Dirty Looks". In 1986, the song was covered by Kenny Rogers and released in January 1987 as the second single from his album "They Don't Make Them Like They Used To". Backup vocals were provided by Bill