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In earlier research, Evershed and his colleagues examined organic residues from pottery from Neolithic, Bronze Age and Iron Age sites in Britain, and they found the first direct evidence that people were dairying as early as 6,000 years ago.
During this analysis, they realized that lipids, or animal fats, are preserved in large enough quantities to be dated with radiocarbon methods.
Organic materials, such as wood and bone, can easily be dated using radiocarbon techniques, but they aren't always available or reliable.
Wood tends to decompose over time, and animals often dig up bones and move them around a site.
A paleobiologist has found evidence of predation in ancient microbial ecosystems dating back more than 740 million years.
Using a scanning electron microscope to examine minute fossils, Porter found ...
"If you go to a site and you find large amounts of Roman pottery, then you know you've got a Roman site," says Richard Evershed, Ph.
The research builds on recent work that has shed light on the types and uses of commodities contained within the vessels. 30 edition of Analytical Chemistry, a peer-reviewed journal of the American Chemical Society, the world's largest scientific society.