Alexander Rich Dies at 90; Confirmed DNA’s Double Helix

May 6, 2015

(New York Times) – James Watson and Francis Crick worked out the spiral structure of DNA in 1953, but they were not proved right until Dr. Alexander Rich used X-rays to produce a distinct image of the famous double helix in 1973. After he saw it, Dr. Watson phoned Dr. Rich to thank him; it was the first good night’s sleep Dr. Watson had enjoyed in 20 years.