### Instruction:
Which of these are ski mountains and which are deserts: Killington, Stowe, Sahara, Kalahari, Palisades, Gobi, Northstar, and Kirkwood.

### Response:
The deserts include: Sahara, Kalahari, and Gobi. The ski resorts are: Killington, Stowe, Palisades, Northstar, and Kirkwood.