Researchers have found the oldest known evidence of lead pollution dating to around 5,200 years ago in ancient Greece.
Studies of sediment cores from the sea floor and the coastal regions surrounding the Aegean Sea show that humans contaminated the environment with lead early on in antiquity.
The most extensive study of the gut microbiome in Africa has discovered new microbial species and never-before-reported metagenomes from several African sites. The paper, titled "Expanding the human ...