Business Green: Global cleantech investment appears to have been unaffected by the financial crisis as worldwide investment in the last quarter more than doubled compared with the first quarter of the year, according to figures released today by analyst StrategyEye. Investment across biofuel, wind, energy and resource efficiency, geothermal, transport and pollution management sectors has risen from $1.4bn in the first quarter of 2008 to $3.8bn in the third quarter. Algae-based biofuels in …