Sunshine is considered to be the most important source of vitamin D. Due to an increased risk of ...
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We report on an evaluation of tropospheric ozone and its precursor gases in three atmospheric che...
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Northeast Brazil experienced profound water shortages in 2016 due to a five-year drought. Using m...
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In northern and central Ethiopia, 2015 was a very dry year. Rainfall was only from one-half to th...
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