LifeHumans and birds share the same singing genes An intriguing evolutionary similarity might mean that songbirds will make good models for studying the genetics of speech disorders 51¶¯Âþ
HealthHIV evolves into less deadly form A form of HIV that first hit in the 1980s now seems slower and less aggressive, suggesting that the virus may be evolving to be less fatal 51¶¯Âþ