Changes

Upon the dissolution of the [[USSR]], and when the [[Berlin Wall]] was torn down, leftists sought a new cause. They joined with [[environmentalist]]s to publicize various [[climate change]] issues such as [[ozone depletion]] and the [[runaway greenhouse effect]].

Upon the dissolution of the [[USSR]], and when the [[Berlin Wall]] was torn down, leftists sought a new cause. They joined with [[environmentalist]]s to publicize various [[climate change]] issues such as [[ozone depletion]] and the [[runaway greenhouse effect]].

Assessments of climate science by the United Nations (see [[IPCC]])

Assessments of climate science by the United Nations (see [[IPCC]] - ''Intergovernmental Panel on Climate Change'')

have ignored natural causes and highlighted guesses  

have ignored natural causes and highlighted guesses  

that human activity,  

that human activity,