This ‘fairyland’ bog is a beacon for winter birders – and a sponge for the climate

Even when it's freezing and covered in snow, Minnesota's Sax Zim Bog attracts birders from around the world. They flock there ...

This weird winter was one of the warmest — and coldest — on record. It’s a glimpse of our future

The Lower 48 states’ split screen winter — a battle between frigid cold in the East and record warmth in the West — ended in the second warmest winter on record. It’s an astonishing demonstration of ...