Eye color for a plausible argument stating that some eyes can or do change, based on chemical reactions and hormonal changes within the body. Studies on Caucasian twins, both fraternal and identical, have shown that eye color over time can be subject to change, and major demelanization of the iris may also be genetically determined. Most eye-color changes have been observed or reported in the Caucasian population with hazel and amber eyes. Carleton Coon created a chart by the original Martin scale. The numbering is reversed on the scale below in the (later) Martin–Schultz scale, which is (still) used in physical anthropology.
What the World Needs Now Is Love assassination, and Martin Luther King, Jr., and soundbites of news coverage of each assassination. The ending of the song is a reprise of the introduction. "What the World Needs Now is Love/Abraham, Martin and John" rose to No. 8 on the "Billboard" Hot 100 in August 1971, and was Clay's only Top 40 hit. "What the World Needs Now is Love" has been used in many film soundtracks, notably "Bob & Carol & Ted & Alice" and "For the Love of Fred" (used as the film's closing theme song in both), "", "My Best Friend's Wedding", "", "The Boss Baby",