Remembering John C. Loehlin: 'Our Field Has Lost A Lion'/Twin Research Reviews: Cognitive Skills And Social Mobility, Risk Of Arachnoid Hemorrhage, Heritability Of Dental Traits, And Twin-To-Twin Transfusion Syndrome/Media Reports: Identical Twins With Different Health Histories, Twins Born 97 Days Apart, Retiring Twin Tennis Players, Tiktok Twins And Twin Reality Stars

John C. Loehlin, professor of psychology at the University of Texas, at Austin, passed away on August 9, 2020. John was 94 years of age. He will be remembered for his seminal contributions that have furthered the field of twin research in so many ways. An overview of his career is presented, with fond memories from his son and several colleagues. This tribute is followed by reviews of twin research on cognitive skills and social mobility, risk of subarachnoid hemorrhage, heritability of selected dental traits and twin-to-twin transfusion syndrome. Finally, twin-related topics of human interest include identical twins with different health histories, twins born 97 days apart, retiring twin tennis players, TikTok twins and twin reality stars.