Machine-made snow forms spherical balls instead of flakes, creating harder surfaces that affect skiing performance, but offer other tradeoffs that help with early season conditions.

With temperatures dropping and snow beginning to fall, ski resorts are starting to ready themselves for the upcoming season.

A safety device helped maintain a buried person’s oxygen levels for up to 35 minutes, tests show, buying crucial time for an avalanche rescue.

Natural snow has been hard to come by in Colorado this fall. Check out the cool science behind how snowmakers get around dry skies, to open resorts ...