Composition of the Atmosphere extended definition. The atmosphere contains many gases, most in small amounts, including some pollutants and greenhouse gases. The most abundant gas in the atmosphere is nitrogen, with oxygen second. Argon, an inert gas, is the third most abundant gas in the atmosphere.
(CNN)Iran has completed the necessary steps in a deal to restrict its nuclear program, meaning international economic sanctions are lifted, officials from the EU and the U.N. nuclear watchdog agency said Saturday. Relations between Iran and the IAEA now enter a new phase.
Market watchers are hoping the relative calm persists as the European Union's full embargo on Iranian oil takes hold. On Sunday, the EU embargo on Iran's oil exports began in earnest, halting the vast majority of imports into Europe, ending exemptions for contracts signed before 2012 and barring insurance for Iranian oil shipments. ... To Read the Full Story, Subscribe or Sign In.