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In a lab experiment, the insects were able to roll a plastic foam ball underneath an artificial blue flower, climb over the ball and use it to reach the flower, obtaining a sugary reward.—Jacopo Prisco, CNN Money, 4 June 2026 One source of microplastics is single-use plastics, such as bags, straws, utensils, condiment packets, coffee stirrers, lids, and polystyrene (a.k.a. plastic foam) cups and takeout containers.—Letters To The Editor, Hartford Courant, 28 Mar. 2026 Using a roller, roll paint over the plastic foam blocks, and press image onto white art paper.—Janna Oberdorf, Parents, 15 Dec. 2025 In 2018, the second-largest Hawaiian island banned plastic foam food containers.—Kathleen Wong, USA Today, 12 Dec. 2025 See All Example Sentences for plastic foam