500-Million-Year Old Fossil Molecules Offer Rare Insight How Earth’s First Animals Lived And Ate

Dickinsonia costata fossil, Ediacaran biota, Precambrian Period. De Agostini via Getty Images
In a new study, Christopher Mulligan, a Ph.D. student at the Department of Earth and Planetary Sciences, University of California, reexamined chemical trace… [2864 chars]