There’s a place where the perennially frozen ground of the Alaskan tundra is interrupted by 2 square miles [~ 5 km² ] of thawed soil. There, cottonwoods and thick brush grow among lazily meandering waterways. The Pilgrim Hot Springs are a pleasant symptom of the geothermal heat which warms the earth deep beneath Alaska’s Seward […]
Laura Nielsen for Frontier Scientists – Paleoclimatology is the study of past climates. One of the many ways to study paleoclimatology is to collect a 2.5 inch [6.6 centimeter] wide tube of mud from a well-situated site. It’s amazing how much we can learn of Earth’s climate past – and what those findings teach us […]
Laura Nielsen for Frontier Scientists – There’s a place in Northeast Russia where, 3.6 million years ago, a meteorite slammed into Earth. A lake filled the crater. Today, the sediment that has settled at the bottom of Lake El-gygytgyn provides a rare preserved climate record: the longest sediment core record ever collected on land in […]