Another theory is that the mantle flows neither in cells nor large plumes but rather as a series of channels just below the Earth's crust, which then provide basal friction to the lithosphere. This theory, called surge tectonics, became quite popular in geophysics and geodynamics during the 1980s and 1990s.
General Motors to discontinue Chevrolet Tavera, Sail and Enjoy in India. According to a report in ET Auto, General Motors is planning to discontinue the production and sale of three Chevrolet products, Tavera, Sail and Enjoy in order to make way for newer products that the company plans to launch in the coming months.
CEO Mary Barra told lawmakers on Tuesday the failure to act was unacceptable. General Motors reportedly refused to replace a faulty ignition switch that would have cost the company less than one dollar per car, Reuters reports. The defective switch is believed to have been responsible for at least 13 deaths in the past nine years. Reuters based its report on a series of emails from 2005 it obtained, claiming âthe change would have cost an extra 90 cents per unit and additional tooling costs of $400,000.â.