The Poverty of Environmentalism

I listened to Caroline Lucas, leader of the Green Party, announce this morning on the Today programme her party's expectation of a breakthrough in the next general elections. In response to John Humphrys suggestion that her party might lose out as a result of the public's scepticism about climate change because of Climategate and recent revelations, Lucas claimed that the Green Party "has always been about both social and environmental justice" and is not a single-issue party. What? I thought the clue was in the name. Going for a bit of Red to spice up the Green brand, are we Caroline?