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How Helium Balloons Work

science.howstuffworks.com/helium.htm

Helium balloons tend to fascinate adults and children alike (and it's not just the Donald Duck voice thing, though that is a big draw). Learn all about helium and why it floats!

Are there more floods now than there used to be?

science.howstuffworks.com/nature/natural-disasters/question665.htm

I read 'How Floods Work,' but I still have a question: Why are there so many more floods now? It seems like there are floods all the time, and it didn't used to be that way. Is it raining more?

Can it really rain frogs?

science.howstuffworks.com/nature/climate-weather/storms/rain-frog.htm

Can it really rain frogs? Learn how waterspouts can make it can rain frogs, squid, fish and even tomatoes.

Strong Bases: Properties, Applications and Examples

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In chemistry, the classification of substances into acids and bases is fundamental.

10 Advancements in Environmental Engineering

science.howstuffworks.com/engineering/civil/10-advancements-environmental-engineering.htm

Environmental engineering existed long before it had a name. It began at the dawn of civilization when we started changing our surroundings to meet our needs.

Braving the Most Dangerous Sea in the World

science.howstuffworks.com/nature/most-dangerous-sea-in-the-world.htm

The world's oceans and seas are vital arteries for global trade, yet they also pose significant risks to those who navigate them. From piracy to maritime disasters, the dangers that mariners face are numerous and varied.

How Landslides Work

science.howstuffworks.com/environmental/earth/geology/landslide.htm

Landslides can be devastating, causing more damage than their triggers. Learn more about landslides and landslide causes.

Why doesn't tear-free shampoo sting your eyes?

science.howstuffworks.com/science-vs-myth/everyday-myths/tear-free-shampoo-not-sting-eyes.htm

Some say the real reason "no tear" shampoo works is that it has Novocain in it, desensitizing babies to its sting. Fact or urban legend?

How do they measure sea level?

science.howstuffworks.com/environmental/earth/oceanography/question356.htm

How do they measure "sea level"? Is it the average of the tides? And is the sea level actually rising or not?

Why could China's Three Gorges Dam cause an environmental disaster?

science.howstuffworks.com/environmental/green-science/three-gorges-dam-disaster.htm

The Three Gorges Dam could very well lead to an environmental disaster for China. Learn about the Three Gorges Dam.

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