Crystals

Resources

Close-up of an amethyst geode

What is a Crystal?

Crystals aren’t just rocks and minerals. Crystals have a well-organized molecular structure, just as important to a crystal as the molecules it contains.
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What is a Crystal?

People playing ice hockey

Why Do Ice Rinks Stay Frozen?

Every ice rink is an example of molecular bonding and gas laws at work!
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Why Do Ice Rinks Stay Frozen?

Battery of Stiger Vortex rainmaking guns at Charleville, Australia, in 1902

What is Cloud Seeding?

Cloud seeding is a type of weather modification. Learn about cloud seeding, as well as its risks and benefits.
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What is Cloud Seeding?