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ar newid yn yr hinsawdd, rhoesant ymrwymiad unochrog gan yr ue i leihau nwyon tŷ gwydr o leiaf 20% erbyn 2020, o’u cymharu â lefelau 1990, a hefyd ymrwymiad i godi’r lleihad i 30% pe bai gwledydd datblygedig eraill yn gwneud yr un peth.
a new simplified set of rules known as “reach” obliges european companies themselves (rather than the public authorities) to assess and manage any risks arising from chemicals they manufacture, import or use.