Welding welding was invented in 1893, and around that time another process, oxyfuel welding, became well established. Acetylene was discovered in 1836 by Edmund Davy, but its use was not practical in welding until about 1900, when a suitable torch was developed. At first, oxyfuel welding was one of the more popular welding methods due to its portability and relatively low cost. As the 20th century progressed, however, it fell out of favor for industrial applications. It was largely replaced with arc welding, as advances in metal coverings (known as flux) were made. Flux covering the electrode primarily shields the base
Ed Gallagher (scientist) that an increasing demand for biofuels might indirectly cause carbon emissions because of land use change, and concerns that demand for biofuels may be driving food insecurity by causing food commodity price increases. Ed Gallagher (scientist) Ed Gallagher (born 4 August 1944) is a British scientist. He was a council member of English Nature and chair of the Pesticides Forum which is part of Department for Environment, Food and Rural Affairs (DEFRA). He is a Freeman of the City of London. Gallagher was chief executive of the National Rivers Authority from 1992 until 1995 when it was subsumed into the