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...analysis and the percentage of different elements can be worked out. But normally it is a combination of methods. There are more indirect routes that don’t look at the elements in the rocks themselves but measure them in the water of streams and rivers. The ‘concentration’ (amount per unit volume or mass) of metals that are found dissolved in stream and river water...

...analysis on how they had outperformed real news on Facebook. Fake news items such as these appeared on regular and social media channels and were swallowed up by millions of people in recent months. On the science front, one example of fake news includes articles downplaying the fact that cigarette smoking and second-hand smoke are bad for human health. Ivan Oransky and...