It is difficult to know exactly when the shift from gelatine to agar occurred. As often happens for scientific breakthroughs, agar was likely adopted incrementally alongside the use of other growth media. In 1913, for example, the first diagnosis of Serratia marcescens as a human pathogen was made by growing it on agar as well as on potatoes.
Tenting and negative tilt
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玻利维亚国防部证实事故，国防部长表示正在调查事故原因，初步指向恶劣天气条件导致降落困难，安全部队（军队、警察和消防人员）已全面接管现场，一方面开展救援，另一方面全力回收散落的钞票。
Nature, Published online: 25 February 2026; doi:10.1038/d41586-025-04161-7
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A coroner has raised concerns over the safety of barriers at Wembley Stadium after an Oasis fan fell to his death at one of the band's concerts.
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