CNN wants you to know about Bamboo Bikes! Some say the amount of energy it takes to manufacture the alloys used in some lightweight bikes (extraction and production of steel, aluminum, titanium, carbon, etc) could never be compensated for by riding that bike for the rest of your life! Crazy, huh? Are wood bikes a good solution?
Organic Bikes offers up a Bamboo Frame with 100% recycled alloy frame lugs:
Here's Renovo's Hardwood and Bamboo Bike Frames:
Also check out this "Waldmeister" wooden bike frame from the German company Woodruff:
Here's some more wooden bicycle eye candy!