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Large earthquakes are possibly caused due to shearing of isolated mountains (seamounts) in subduction zones of the ocean. The position of seamount decapitation determines the magnitude of the earthquake. Asperities are strong areas of the plate interface that control earthquake occurrences. They are made from the subducted seamounts and are affected by sea floor roughness and style of sediment subduction. The size of earthquakes varies between subduction zones probably due to the absolute velocity of the overlying plate that affects the speed of subduction.

Focuses on the report `New Electricity Trading Arrangements' (NETA), proposed by the Office of Gas and Electricity Markets (OFGEM) of Great Britain toward efficient and effective competition in electricity in England and Wales. How prices in a decentralized electricity market are determined; Benefits of NETA; Conclusions.

Addresses questions on the phenomemon of earthquake interaction. Evidence that Landers earthquake directly triggered more earthquakes at 14 sites scattered over western United States; Three questions regarding earthquake interaction; Author's responses.