Freiherr von Justus Liebig

Born in Darmstadt in 1803, Justus von Liebig became one of the most influential chemists of the 1800s. He studied in Germany and Paris, then built his career at the University of Giessen, where his teaching laboratory became a model for scientific training and helped shape the way chemistry is taught around the world.

Liebig is especially remembered for advancing organic chemistry and agricultural chemistry. He studied plant nutrition, argued that mineral nutrients in soil are essential for growth, and helped popularize the idea later known as the law of the minimum. He also improved chemical analysis and wrote widely read books that brought chemistry to a larger public.

His interests reached well beyond the laboratory. Liebig wrote about food, health, and farming, and his name became closely associated with meat extract and other practical applications of chemistry. He was later made a baron, which is why he is often listed as Freiherr von Justus Liebig, and he died in Munich in 1873.