And in 2013, Randall Donohue, a research scientist at the Commonwealth Scientific and Industrial Research Organization in Australia, published research showing very similar findings to those found by Idso and others. Donohue used satellite images and found the Earth is greening, which seemingly runs counter to arguments made by environmentalist activist that global warming is causing mass droughts and tree and plant death. “Lots of papers have shown an average increase in vegetation across the globe, and there is a lot of speculation about what’s causing that,” Donohue noted a press release.