Previously Uncounted (IMAGE) Columbia Climate School Caption Tiny bits of polystyrene plastic, as detected by lasers; each one measures about 200 nanometers, or 200 billionths of a meter. Credit Naixin Qian, Columbia University Usage Restrictions Credit must be given. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.