Scientists have directly detected argon-42, one of the rarest isotopes in Earth’s atmosphere, found at just one part in 10. Previously observed only indirectly, the isotope has now been identified atom by atom, marking a major advancement beyond traditional accelerator mass spectrometry methods.

US President Donald Trump has intensified pressure on Federal Reserve Chair Jerome Powell, warning he may remove him if he does not step down after his term ends in May. The move comes amid ongoing disagreements over interest rates and an investigation into Powell