Microplastics hinder plant photosynthesis, study finds, threatening millions with starvation.

It sounds like it’s early days for research on this topic so the headline figure of this effect causing an extra 400 million folk to be at risk of starvation over the next 20 years might not be the exact number. But any substantial amount of crop loss (and subsequent seafood production), especially in conjunction with that caused by climate change, certainly isn’t good.