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A recent lidar analysis revealed that an area once assumed to be natural hills, center, near Tikal rsquo s Lost World complex, right, is actually an 1,800-year-old ruined citadel. Credit: Thomas Garrison/PACUNAMScientists have been excavating the ruins of Tikal, an ancient Maya city in modern-day Guatemala, since the 1950s mdash and thanks to those many decades spent documenting details of every structure and cataloging eac nike dunk high h excavated item, Tikal has become one of the best understood and most thoroughly ugg ultra mini studied archaeological sites in the world.But a startling recent discovery by thePacunam Lidar Initiative, a research consortium involving a Brown University anthropol stanley ogist, has ancient Mesoamerican scholars across the globe wondering whether they know Tikal as well as they think.Using light detection and ranging software, or lidar, Stephen Houston, a professor of anthropology at Brown University, and Thomas Garrison, an assistant professor of geography at the University of Texas at A Jqci A New Class of Molecular Compounds Capable of Killing the Influenza Virus
Many organisations vowed to reach net zero during COP26, but suppliers say there is a lack of collaboration on green initiativesResearch from Ivalua, a leading global spend management cloud provider, has revealed that very few European suppliers are being regularly assessed on sustainability practices, with less than a quarter (24%) being measured routinely on carbon emissions. The study also highlights that converse chucks most organisations are not communicating across the supply chain to drive green initiatives. Just one-in-ten (10%) suppliers say that organisations always include sustainable practices in nike air max 1 contracts and agreements.The research, conducted by Coleman Parkes, surveyed suppliers across the UK, France, Germany and Switzerland to examine how collaboration can boost environmental initiatives. But, the study shows more needs to nike air max 1 be done across the supply chain to regularly assess and measure green credentials, as only a small percentage of suppliers say that organisations routinely measure t |