ClimateBiz: The United Kingdom aviation industry could see its passenger counts increase threefold through 2050, but carbon dioxide emissions are expected to sink to 2000 levels, according to an industry group. Sustainable Aviation released a report Friday assessing the environmental impact of the U.K. air transport industry, finding that emissions will peak around 2020 before falling back to 2000 levels in 2050 based on new aircraft and traffic management technology and lower carbon fuels. It …