Trilobites: In Ancient Guano, a Record of Penguin Disaster Guano in lake sediment showed that an Antarctic penguin colony was devastated three times during the past 7,000 years by volcanic eruptions. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:Supermoon 2017 in case you missed it: How to watch the full moon rise AGAINGoogle’s supercomputer builds AI computer better than anything humans have ever builtTrilobites: Stress Hormones Soar in Whales Trapped by Fishing LinesKrefeld Journal: The German Amateurs Who Discovered ‘Insect Armageddon’Secret manuscript revealing Jesus’ teachings to his brother James re-writes The BibleAI TERROR WARNING: Death cults such as ISIS ‘CERTAIN to get their hands on KILLER ROBOTS’