The Waiho Loop moraine in New Zealand's southern Alps had long been viewed as a southern icon of a recent glacier response to cooling climate, possibly the Younger Dryas cold event. But a closer look ...
The last glacial period was from 110,000 to 12,000 years ago. The Laurentide ice sheet — a massive ice block 3.2 kilometres thick in Nunavik, Quebec — was 1.6 km thick in our area. It covered most of ...
Sidney Stevens is a writer and editor for magazines, websites, and books, with a focus on health and environmental issues. As glaciers retreat, they leave piles of rocks and debris that they once ...