In lab settings, ultraviolet light deteriorates plastic so microbes can break it down further. But, in nature, plastic often persists in waterways for decades despite direct sunlight. While lab experiments often use purified water or unrealistic water chemistry, engineers found salts and other chemical constituents in natural waters suppress sunlight-driven degradation. Organic matter further slows down plastic degradation in freshwater and seawater.

In a significant step forward for advancing science to support public health, the American Society for Nutrition (ASN) and The Obesity Society (TOS) are proud to announce a new strategic alliance that unites two leading scientific organizations under a shared vision: advancing health through the best in nutrition and obesity research and practice. This collaboration reflects a growing recognition that nutrition and obesity science are interconnected disciplines critical to improving global health. Together, ASN and TOS will work to accelerate the translation of cutting-edge research into effective practice, education, and policy.