Plastics Recycling: A Global Overview

Optical sorting machine

MSS Optical sorting machine

Humans are currently producing about 100 pounds of plastic per person per year on this planet (~250 pounds the US) and at the current rate of increase that number will be Continue reading

Life with Less Plastic (Plastic Waste, Part 2)

Vending maching in Japan

Written in collaboration with Tomoko Yoshida.

Our previous post provides an institutional view of our world’s current plastic waste problem. We showed how institutions in various sectors of society Continue reading

Plastic Waste (Part 1)

Plastic waste

Written in collaboration with Tomoko Yoshida.

Plastic has become an integral part of our lives…. But with that has emerged the enormous—and growing—problem of plastic waste. Continue reading

What are plastics?

Polyethylene-terephthalate-3D-spacefill

What are plastics?

All plastics are composed of carbon atoms connected to one another in a chain-like structure, with mostly or exclusively hydrogen atoms attached to the carbon atoms.   Gasoline, candle wax and plastics all have this same structure; gasoline has Continue reading