Important everyday products—from plastics to detergents—are made through chemical reactions that mostly use precious metals such as platinum as catalysts. Scientists have been searching for more ...

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In the days of cold, hard newsprint, only people who could draw were successful comic strip authors. In some cases, this resulted in comic strips that had very nice pictures, but weren't all that ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Justin Pot Our upgrade pick, Babbel, has discontinued its premium Live service ...