Ancient pollen reveals stories about Earth’s history from the asteroid strike that killed the dinosaurs to the Mayan collapse

An electron microscope image, colorized, shows different structures of pollen grains, including sunflower, morning glory and primrose. Dartmouth Electron Microscope Facility – By Francisca Oboh Ikuenobe, Professor of Geology and Geophysics, Missouri University of Science and Technology and by Linus Victor Anyanna, Graduate …