Peter is a glaciologist and climate scientist working primarily to develop glacier ice core records of past climate, environmental conditions, and atmospheric chemistry. Peter’s current research focuses on better understanding recent climate of changing coastal regions in West Antarctica, areas which play a large role in uncertainty for future projections of sea level rise. He is the US leader of the "RAICA" effort, a South Korea - US effort to recover ice cores and construct a "Ross-Amundsen Ice Core Array." Peter is also working to capture the last 200-500 years of hydroclimate variability in southwestern British Columbia, Canada, recently recovering a 219 meter-long ice core from Mt. Waddington and now developing the southernmost annually-resolved ice core paleoclimate record in North America. Peter is the Director of Field Research and Data for the Center for Oldest Ice Exploration (COLDEX), a National Science Foundation Science and Technology Center that seeks to find the oldest possible ice core records of past climate preserved in Antarctica. Peter shares widely about ice core climate science via Twitter, TikTok, and Instagram.