The different colors [of water] again refer to the fact that those little jacks, if you want to call them jacks, those little pyramids, can be packed together in all different ways. And depending on how they're packed together.If you Google blue ice, as I did just while your caller was asking his question, you see some beautiful pictures of ice covering a lake.

Amorphous forms [of ice], for example, are found naturally on comets, on asteroids, and the crystalline forms are found on Earth or at least could be made on Earth with enough pressure. Nothing else does this.

The different colors [of water] again refer to the fact that those little jacks, if you want to call them jacks, those little pyramids, can be packed together in all different ways. And depending on how they're packed together.If you Google blue ice, as I did just while your caller was asking his question, you see some beautiful pictures of ice covering a lake.

People tend to romanticize what they can't quite remember.

I think the most remarkable thing about ice, in my opinion at least, is that it occurs in many, many, many different forms. Most solids occur in typically one or maybe two or three different forms, and ice has approximately 15 different crystal forms, as well as two forms that are called amorphous, which means without any shape at all.

Form follows finances instead of function.

Ice is remarkable in many ways. A simple experiment one can do at home is to add salt to an amount of water in different concentrations. For example, one can mimic the concentration of the ocean, or one can make it even saltier.