Transcript of Cast Iron: An Invention of Ancient China. Mass-production began in the Han dynasty. At the time of its invention, cast iron had many uses. Since the discovery of steel, iron (both cast and wrought) has become less common, as steel is generally stronger.
Asafoetida is a plant. It has a bad smell and tastes bitter. That probably explains why it is sometimes called âdevilâs dung.â. People use asafoetida resin, a gum-like material, as medicine. Asafoetida resin is produced by solidifying juice that comes out of cuts made in the plantâs living roots. Asafoetida is used for breathing problems including ongoing (chronic) bronchitis, H1N1 swine flu, and asthma.
Amantadine is used to treat Parkinsons disease, as well as parkinsonism syndromes. A 2003 Cochrane review concluded evidence was inadequate to support the use of amantadine for Parkinson's disease. An extended relief formulation is used to treat dyskinesia, a side effect of levodopa which is taken by people who have Parkinsons.