EarthInvention: Tree-hugging wind turbine Perfect for cities, the new device can mount around the outside of any vertical structure such as a chimney or phone mast, says a patent application ¿ìè¶ÌÊÓÆµ
EarthGreen fuel technologies pick up speed in 2008 As Obama prepares to green the US, we take a look at the new technologies that may help – from super batteries to oil-cleaning fungi ¿ìè¶ÌÊÓÆµ