And, as there are seven categories of plastics, a number from one to seven is set inside the triangle to tell you which kind ...
He said that once the plastic is broken down, it can be recycled and used again. Study co-author John Hartwig says they ...
Ever wonder what those small numbers on the bottom of your plastic bottles and takeout containers mean? They're called Resin Identification Codes. Follow BI Video: On Twitter More from Science ...