What substances cause the characteristic smell of asparagus pee?
Author Archive for: Klaus Roth (135)
Chemistry with Spit and Polish
For generations, conservators have been cleaning the surfaces of artworks with their saliva
Sir Henry’s Secret Pot of Gold – Part 3
How Henry Bessemer would advise modern entrepreneurs and how he smartly outwitted his competitors
Sir Henry’s Secret Pot of Gold – Part 2
Henry Bessemer's breakthrough method to make gold bronze
Sir Henry’s Secret Pot of Gold – Part 1
A true fairy tale for entrepreneurs—with a rocky start
Pyrethrum: History of a Bio-Insecticide – Part 6
How pyrethrins kill insects and the variety of modern pyrethroids
Pyrethrum: History of a Bio-Insecticide – Part 5
The fall of DDT and the rise of pyrethrin derivatives
Pyrethrum: History of a Bio-Insecticide – Part 4
The comeback of pyrethrin research
Pyrethrum: History of a Bio-Insecticide – Part 3
Comparing the insecticidal activity of DDT and pyrethrins
Pyrethrum: History of a Bio-Insecticide – Part 2
The chemical structures of pyrethrins and insecticide use between the World Wars