Tin is a rare metal that is essential for making bronze, the defining technology of the Bronze Age. The source(s) of tin for Aegean bronze is undetermined but several small Bronze Age tin mines have been documented in the circum‐Aegean region. The discovery of Bronze Age archaeological sites in West Serbia near a tin placer deposit on the flanks of Mt. Cer led to an investigation of this site as a potential additional Bronze Age tin mine in the region. Geochemical prospecting of stream sediments flowing from Mt. Cer allowed for categorization of streams based on relative tin grade. Tin grade is highest in the Milinska River, a likely combination of a broad catchment area with multiple ore‐bearing tributaries, and a topographic profile that favors the accumulation of placer deposits. A survey of cornfields along the southern pluton margin discovered archaeological sites spanning the Neolithic to the Iron Age. Unlike older and younger sites, those of the Bronze Age were found only along the Milinska and Cernica Rivers where placer tin grades are highest, but appear to be absent where tin is scarce or absent. This suggests that these sites were associated with the exploitation of the tin ore.
Citizen science is a form of public participation in scientific research where volunteer members of the public and research scientists collaborate to address real world problems (Bonney et al., 2009(Bonney et al., , 2014Shirk et al., 2012). In the last decade, participatory research projects have grown in popularity with the public, with millions of people volunteering on projects every year (Bowser et al., 2020;Callaghan et al., 2019). Increasingly, scientists are using citizen science data in their research that spans biological conservation to mapping galaxies (McKinley et al., 2017;Shanley, 2020). Recently, the value of the volume, velocity, and variety of data created by non-specialist volunteers using personal mobile devices has also attracted the attention of public health researchers (Katapally, 2020;Wang et al., 2019). When it comes to pandemics,
While the impacts to the infrastructures in Barbuda and Puerto Rico by Hurricanes Irma and Maria have received attention in the news media, less has been reported about the impacts of these catastrophic events on the tangible and intangible cultural heritage of these Caribbean islands. This report provides an assessment of the impacts on the cultural heritage by these storms; tangible heritageincludeshistoricbuildings, museums, monuments, documents and other artifacts and intangible heritageincludestraditionalartistry, festivities, and more frequent activities such as religious services and laundering. While the physical destruction was massive, the social contexts in which these islands existed lessened the resiliency of the people to respond and rebuild after the storms. While change may be inevitable for Barbuda and Puerto Rico, disaster capitalism is threatening the cultures of the people, and may result in the loss of local knowledge and practices.
This technical report summarizes the GLOBE Observer data set from 1 April 2016 to 1 December 2019. GLOBE Observer is an ongoing NASA‐sponsored international citizen science project that is part of the larger Global Learning and Observations to Benefit the Environment (GLOBE) Program, which has been in operation since 1995. GLOBE Observer has the greatest number of participants and geographic coverage of the citizen science projects in the Earth Science Division at NASA. Participants use the GLOBE Observer mobile app (launched in 2016) to collect atmospheric, hydrologic, and terrestrial observations. The app connects participants to satellite observations from Aqua, Terra, CALIPSO, GOES, Himawari, and Meteosat. Thirty‐eight thousand participants have contributed 320,000 observations worldwide, including 1,000,000 georeferenced photographs. It would take an individual more than 13 years to replicate this effort. The GLOBE Observer app has substantially increased the spatial extent and sampling density of GLOBE measurements and more than doubled the number of measurements collected through the GLOBE Program. GLOBE Observer data are publicly available (at http://observer.globe.gov).
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