Microplastics are accumulating in agricultural soils at a rate significantly higher than in oceans, warns a new review from Murdoch University, Australia. The study estimates farms now hold up to 23 times more microplastics than seas. According to the findings, microplastics and nanoplastics have now been detected in several key crops, including lettuce, wheat, and carrots. This happens when particles enter soil through means such as plastic mulching, fertilizers, and even through being dropped by clouds.