This week, a federal court judge in Toronto heard arguments from a plastics lobby group and the federal government, in a challenge to a ban on single-use plastics like bags, straws and stir sticks that was introduced last year. On today’s episode, Lisa Erdle, microplastics researcher and the director of science and innovation at the U.S.-based 5 Gyres Institute, describes what’s at stake in the court hearing, the impact of plastics in the environment and what can be done to improve the situation. For transcripts of this series, please visit: https://www.cbc.ca/radio/frontburner/transcripts