Where's the best place to keep warm, a mountain top or a valley? Well, it just depends...
Despite weighing tons, clouds seem to free-float in the air. How do the billowy marvels stay up in the sky?
It may sound paradoxical, but warm spells and flurries often go hand in hand.
Why do airplanes sometimes leave long white contrails behind?
What causes the salt to get clumpy in the shaker? Find out on this Moment of Science.
Is it always colder on top of mountains? Find out on this Moment of Science.