Microplastics! They're in everything, from our bodies to the ocean. And apparently they're even found in sediment layers that date back as early as the first half of the 1700s, showing microplastics' pernicious ability to infiltrate even environments untouched by modern humans. A team of European researchers made this alarming discovery after studying the sediment layers at three lakes in Latvia, as detailed in a study published in the journal Science Advances. Scientists have long used layers of ash or ice to study past events on Earth, leading to the question of whether microplastics can serve as a reliable chronological...