Chemical Recycling: A False Promise for the Ohio River Valley
Ohio River Valley Institute’s July 2024 report explores the many reasons why chemical recycling is a false promise for the region, from hazardous chemicals, to greenhouse gas emissions, the habitat and ecosystem degradation, to the technology’s expense and general lack of success, and more.
Microplastic presence in dog and human testis and its potential association with sperm count and weights of testis and epididymis
Our study revealed the presence of microplastics in all canine and human testes, with significant inter-individual variability. Mean total microplastic levels were 122.63 µg/g in dogs and 328.44 µg/g in humans. Both humans and canines exhibit relatively similar proportions of the major polymer types, with PE being dominant. Furthermore, a negative correlation between specific polymers such as PVC and PET and the normalized weight of the testis was observed. These findings highlight the pervasive presence of microplastics in the male reproductive system in both canine and human testes, with potential consequences on male fertility.
State of the Science On Plastic Chemicals
Although there is a wealth of scientific information on plastic chemicals and polymers to inform policymakers, implementing this evidence is challenging because information is scattered and not easily accessible. The PlastChem report and database address this issue by comprehensively and consistently synthesizing the state of the science on plastic chemicals, including their hazard properties, and their presence in polymers. The state-of-the-science report provides the publicly available evidence to inform policy development that protects public health and the environment.
An Introduction to Plastics and Toxic Chemicals
The health and environmental impacts of plastics are a global crisis. Scientific evidence shows that we have broken through the “planetary boundaries” for chemical and plastics pollution, meaning that production and emissions may be threatening the stability of the entire global ecosystem. To best understand what plastics pollution is, one must understand what plastic is: a material made from carbon (fossil fuels) and chemicals. Plastics do not exist without chemicals, and harmful chemicals are released at every phase of the plastics life cycle – from oil extraction to plastics production, transport, use, and disposal.
Are Bioplastics and Plant-Based Materials Safer Than Conventional Plastics? In Vitro Toxicity and Chemical Composition
Plastics contain a complex mixture of known and unknown chemicals; some of which can be toxic. Bioplastics and plant-based materials are marketed as sustainable alternative to conventional plastics. However, little is known with regard to the chemicals they contain and the safety of these compounds. Thus, we extracted 43 everyday bio-based and/or biodegradable products as well as their precursors, covering mostly food contact materials made of nine material types, and characterized these extracts using in vitro bioassays and non-target high-resolution mass spectrometry.