Sentences with phrase «main greenhouse gas reached»
«The last time the concentration of Earth's main greenhouse gas reached this mark, horses and camels lived in the high Arctic.
http://www.climatesciencewatch.org/ Not exact matches
Nitrogen fertilisation is however a main contributor to increased nitrous oxide (N2O) emissions, a very potent greenhouse gas (per century 298x as potent as CO2) and which — under accelerating growth — has just reached a concentration of 323.2 ppb.
This report evaluates Minnesota's energy policy and reaches five main findings that buttress one conclusion: Minnesota's aspirational energy policy is a grand exercise in virtue signaling that does little to reduce either conventional pollution or greenhouse gas emissions.