Precursor

Using individual atoms to achieve fossil-free chemistry— Methanol is a key starting material for chemical products. Researchers from ETH Zurich can now produce this precursor from CO2 and hydrogen with high efficiency by using isolated metal atoms as catalysts.

Signs on Stone Age objects: Precursor to written language dates back 40,000 years - EurekAlert!

These 40,000-Year-Old Marks May Be a Precursor to Writing

Newly discovered predatory “warrior” was a precursor of the crocodile – and although it lived before the early dinosaurs, it looked just like one - EurekAlert!

New discovery of wild cereal foraging – a precursor to agriculture – far from the fertile crescent - EurekAlert!

Mars experienced a precursor to plate tectonics | Pervasive volcanoes and distinct rock types may hint at key geological processes.

Precursor of cholesterol protects cells from ferroptosis