You might get eco-guilt when you toss a plastic bottle into the recycling bin. Will the material from the container really be used to make something new? The answer to that question is unclear.

Teach yourself how to build a plastic bottle house with cob and transform trash into a home. I build houses out of trash. I was inspired by the life of Kenyan Nobel laureate Wangarĩ Maathai, who said, ...

Add Yahoo as a preferred source to see more of our stories on Google. whitebalance.oatt / E+ via Getty Images Plastic bottles are the whack-a-moles of the real world. You recycle one and dozens more ...