TUCSON, Arizona, Feb. 5 (TNSJou) -- The University of Arizona issued the following news release: * * * Over a two-year period, researchers detected 1,200 methane "ultra-emitters." * * * An international team has discovered hundreds of large bursts of methane from oil and gas production activities across the globe. The bursts account for 10% of global oil and gas methane emissions and are missing from most greenhouse gas emissions inventories. Carbon Mapper, a nonprofit organization that par  more