John Marston and Catherine West are co-authors on a paper published today in Science. The article is a reconsideration of the entire history of land use of the Earth. It was sourced by asking regional experts to contribute their areas of expertise and thus represents an expert consensus on land use histories. Marston and West are among those experts who contributed as authors. The primary finding of the article is that humans transformed some areas of the Earth more substantially at earlier dates than previously thought based on global simulations produced from paleoenvironmental evidence, and that environmental archaeological data may provide a better approach to reconstructing past land-use change than paleoenvironmental data alone.