Tonight on Amanpour and Company: Report: The scientists who first detected Omicron: Dr. Helen Rees, Chair, W.H.O. Regional Immunization Technical Advisory Group for Africa & Dr. Ayoade Alakija, Co-chair, African Vaccine Delivery Alliance; Ryan Busse, Fmr. firearms executive and author, Gunfight. Michel Martin interviews Tamara Payne, Co-author, The Dead Are Arising. Report: Saving the white rhino.