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
Kathy Martin (scientist) moved to Vancouver to assume her current joint appointment with the Faculty of Forestry at the University of British Columbia and Environment and Climate Change Canada. Kathy Martin (scientist) Kathy Martin is a global authority on arctic and alpine grouse and ptarmigan, and on tree cavity-nesting vertebrates. She is a Professor in the Faculty of Forestry at the University of British Columbia and a senior research scientist with Environment and Climate Change Canada. Martin, who trained in ornithology, is currently President (April 2018-August 2020) of the American Ornithological Society. Over three decades, Martin has been a leader in Canada's Conservation