Leaks at Atlanta’s Ebenezer Baptist Church National Historic Park, where Martin Luther King, Jr. served as pastor, have left crumbling plaster and stains on the ceiling.
Leaks at Atlanta’s Ebenezer Baptist Church National Historic Park, where Martin Luther King, Jr. served as pastor, have left crumbling plaster and stains on the ceiling.
Researchers have been able to fish out fragments of pathogen DNA from remains since the 1990s. And in the past decade, next-generation DNA sequencers that can read myriad short snippets — useful for sequencing DNA damaged after hundreds or thousands of years
Researchers have been able to fish out fragments of pathogen DNA from remains since the 1990s. And in the past decade, next-generation DNA sequencers that can read myriad short snippets — useful for sequencing DNA damaged after hundreds or thousands of years
The analysis also implies that the virus was circulating in humans even earlier: at least 1,700 years back, in the turbulent period around the fall of the Western Roman Empire, when many peoples were migrating across Eurasia.
The analysis also implies that the virus was circulating in humans even earlier: at least 1,700 years back, in the turbulent period around the fall of the Western Roman Empire, when many peoples were migrating across Eurasia.
The researchers traced this family tree using a ‘molecular clock’ approach: they measured how much the ancient and modern lineages differed, and used the rate at which genetic differences accumulate to calculate how much time had elapsed since the lineages split. This analysis suggests that their most recent common ancestor lived around 1,700 years ago (see ‘Ancient smallpox’)?
The researchers traced this family tree using a ‘molecular clock’ approach: they measured how much the ancient and modern lineages differed, and used the rate at which genetic differences accumulate to calculate how much time had elapsed since the lineages split. This analysis suggests that their most recent common ancestor lived around 1,700 years ago (see ‘Ancient smallpox’)?