How isotopes reveal insights into ecosystems

Isotopes of elements are like siblings. They have the same number of protons and electrons but a different number of neutrons than the primary form of the element. This difference in neutrons doesn't affect their chemical ...

Will you take ruthenium with your tea or coffee?

A study by Lionel Delaude and François Mazars, researchers from the Laboratory of Catalysis at the University of Liège (Belgium), has shown that caffeine and theophylline can be used to "green" catalysts based on ruthenium. ...

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