How Long does It Take for Plastic to Decompose?

According to Penn State University, a plastic bag takes 10 to 20 years to decompose, where as a plastic container takes 50 to 80 years to decompose. The worse though is a plastic soda bottle. A plastic soda bottle takes 450 years to decompose! All of these types of plastics are recyclable however. This is just another reason why recycling should be done by everyone.