While this research enhances our knowledge of ancient ecosystems, it also emphasizes the often - overlooked importance of trace fossils, like footprints, and the work of amateur scientists. (sciencedaily.com)
Scientists have also used drilling and other techniques to look at ancient ecosystems under other ice shelves, but those methods often leave an incomplete picture. (earther.com)
By sequencing whatever DNA emerges (called eDNA) from even a thimbleful of ancient soil, researchers are reconstructing ancient ecosystems as far back as 700,000 years ago with astonishing clarity. (science.sciencemag.org)