Iridium oxide is one of the most important—and most problematic—materials in the global push toward clean energy. It is ...

A supermassive black hole with a case of cosmic indigestion has been burping out the remains of a shredded star for four years—and it's still going strong, new research led by a University of Oregon ...

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Seawater has tons of lithium, but it is present at a concentration of just 200 parts per billion (ppb) and is drowned by ...