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Atmosphere: Weather Fronts

Related Article: Learn more about precipitation.

When air masses meet, a boundary called a front is formed, preventing the masses from mixing. Diagrams help students learn about cold fronts, warm fronts, stationary fronts, and occluded fronts.

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Discovery Wonders of Weather: Lightning Phenomena (5:05)

Lightning will strike anything that stands high above the ground. Trees are a favorite target. Watch a lightening video at HowStuffWorks.

Lightning (1:57)

What are the odds you will be struck be lightning?

Snowflake Formations (0:54)

Scientists create 3-D simulations of snowflake formations.

How Water Works (1:55)

There are over 300 million trillion gallons of water on earth. To learn more about water and it's amazing properties, check out this HowStuffWorks video.

Giant Food Price Map from NASA (1:29)

Watch this video showing how NASA is creating a giant food map on HowStuffWorks. NASA satellites are now watching crops grow on Earth. It turns out watching from space is a good way to see if food crops are in trouble. Spotting trouble early may... More »

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Lightning (1:57)

What are the odds you will be struck be lightning?

What Are the Odds? Lightning (1:56)

What are the odds you will be struck by lightning? Learn more about odds in this video.

How Water Works (1:55)

There are over 300 million trillion gallons of water on earth. To learn more about water and it's amazing properties, check out this HowStuffWorks video.