Edie: Modern day prospectors are embarking on a “green gold rush” to invest in renewable energy in the face of rising oil prices and climate change. Fossil fuel prices, rising temperatures, the support of world governments and energy security concerns drove a record-setting year of renewable energy investment in 2007, according to a UN Environment Programme (UNEP) report. Achim Steiner, head of UNEP and UN under-secretary general, said: “Just as thousands were drawn …