LOS ANGELES, March 8 -- A unique laser-Raman imaging system helped scientists substantiate the biological origin of the earliest known cellular fossils at 3.5 billion years ago, as reported this week in the journal Nature. UCLA paleobiologist J. William Schopf and a team of scientists at the University of Alabama devised the imaging technique to look inside of rocks and determine what they are made of, providing a molecular map. "This new technique is a tremendous breakthrough, and is something we have sought for 25 years," Schopf said. "Because Raman spectroscopy is nonintrusive,...Read full articleRelated content from Photonics MediaArticlesMurad Alam Named ASLMS President; SPIE Journal Pegs Bennett Landman as Editor: People in the News: 05/24/23Murad Alam was introduced as president of the American Society for Laser Medicine and Surgery during the annual business meeting on April 15. 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