Keyword Glaciers

What strange forces saved one isolated section along the Upper Mississippi River from the repeated crushing and scouring effects of glaciers during the last two million years? And what pre-Ice Age throwbacks survived here in this unique geologic refuge that holds more Native American effigy mounds, petroglyph caves, strange geological features, and rare species than anywhere in the Midwest? These questions and more are answered in this captivating new documentary. A team of scientists embarks on a journey of exploration to expose both the science and threats behind three unique features of the zone - rare plants and animals, odd geological phenomenon, and striking remnants of a Native American pilgrimage like no other.

Ice has always moved. When glaciation took hold some 34 million years ago, interconnected rivers of ice combined to produce the Earth's vast ice sheets. As temperatures slowly warmed glaciers developed a unique balancing act; advancing and retreating to calibrate their annual winter accumulation against summer melt. Sometimes calving colossal icebergs into the sea. A positive feedback loop that has regulated the movement of ice for millions of years.

A short film about the joys of year-round naked swimming in the mountain lakes of Snowdonia, N.Wales.

Glaciers of the Winds is a one-hour documentary on the scientific exploration and retreat of the glaciers in the Wind River Mountains of Wyoming. WyomingPBS will look at the big picture of how receding alpine glaciers will affect the ecosystem, municipalities, farmers, and ranchers downstream.