What happened to all the snow in Norway?

The Sno indoor skiing resort opened its doors just one month ago, during the country's warmest January on record. — Bloomberg

On a Monday morning in February skiers glided down the run, while snowboarders nearby practiced jumps on the ramps and tired visitors rested on red picnic chairs and munched snacks as they recovered.

The scene could be that of any winter morning on any ski resort in Norway the cradle of modern skiing – except that snow hadn’t fallen from the sky, and the view of a powder-coated Scandinavian forest was printed on a giant panel built on the side of the slope.