A recent headline skittered across web pages, as it did above an Environmental Leader article pointing out a "surprising" upward sign in these tentative times: Along with seasonal temperatures, investor interest in climate bonds has warmed to a tune of $174 billion according to an HSBC Change Center commissioned research report.

t was speculated in Part 1 that wind power has held a fascination in our minds since ancient times, and still does. One year later here is Part 2, also written in 2009, at which time there were 23,000 turbines installed, capable of generating more than 38 GW of wind energy pushing the total figure to 160 GW. Hold that thought and then consider that globally somewhere around one to two percent of electricity we humans use comes from wind turbines [see David Beattie's 12.22.10 World Energy post].