What happened to life on Earth after a six mile-wide asteroid landed near the Yucatan Peninsula approximately 66 million years ago? Professor Karen Chin will describe trace fossil evidence for some of the earliest animal activity after the second largest mass extinction in Earth history. Join us on Oct. 29, 7 to 9 p.m. at the CU Museum of Natural History for this free lecture. This lecture series is being held in conjunction with the Steps in Stone, Walking through Time exhibit, now showing at the CU Museum of Natural History.