Terra Planet Earth on MSN

Is Earth naturally headed toward another ice age?

Orbit can pace ice ages, but modern CO2 shifts the clock. The next true glacial era is far off, while warming runs hot right ...

Tracing The Footsteps Of John Muir On Wisconsin’s Ice Age Trail

Meandering more than 1,200 miles across Wisconsin, the Ice Age National Scenic Trail is one of the longest hiking and ...