A Kyushu University study (2021) estimated there were 24.4 trillion pieces of microplastics in the world's upper oceans or roughly 30 billion 500-ml plastic water bottles. Microplastics are tiny, toxic and very hard to remove from the environment. But researchers in the US have discovered that some Natural Deep Eutectic Solvents (NADES) can attract and bind microplastics, making it easier to remove them from the environment. And the N in NADES is key - natural - in this instance, think extracts from plants. https://www.research.uky.edu/news/researchers-develop-eco-friendly-magnet-battle-microplastics

According to the Department of Climate Change, Energy, the Environment and Water, the average Australian produced 20 kilograms of e-waste in 2019. Approximately 8% of that e-waste is estimated to consist of printed circuit boards (PCBs), which because of the composites and/or laminates used can be too costly to recycle. But JIVA, a company in the UK, has developed a fully recyclable and biodegradable PCB laminate which they call Soluboard®. And they are working with others to continue to commercialise and test even more biodegradable options.https://www.port.ac.uk/news-events-and-blogs/news/new-partnership-to-help-develop-the-worlds-first-biodegradable-printed-circuit-boa