Francisca Oboh-Ikuenobe

An electron microscope image, colorized, shows different structures of pollen grains, including sunflower, morning glory and primrose. Dartmouth Electron Microscope Facility

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

Palynologists who study tiny pollen fossils share 4 stories found in grains that fell hundreds to millions of years ago.