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How rare are double rainbows?

science.howstuffworks.com/nature/climate-weather/atmospheric/double-rainbows-rare.htm

A double rainbow, man! Just the sight of one can send us babbling into happiness. And why not? Rainbows are beautiful. And two rainbows at the same time? Even better. But just how rare are these colorful arcs?

How soon will we be able to create a moon base?

science.howstuffworks.com/moon-base.htm

A moon base could allow us to further explore the solar system. Learn about a moon base and find out how soon we will be able to construct a moon base.

How strong are the magnets in an MRI machine?

science.howstuffworks.com/question698.htm

How strong are the magnets in an MRI machine? Can they pull a watch of your arm or even more? Learn just how strong MRI magnets are on this page.

How tall can a tree grow?

science.howstuffworks.com/life/botany/tree-grow.htm

Can a tree grow and grow? Or can a tree grow only to the point that water transport limits it? Learn more about tree growth and the tallest trees.

How the 'Wow!' Signal Works

science.howstuffworks.com/science-vs-myth/unexplained-phenomena/wow-signal.htm

In 1977, SETI volunteer Jerry Ehman saw a transmission so exciting he circled it on paper and wrote the word "Wow!" It seemed to indicate a message from outer space. But what was it really?

How the Airbus A380 Works

science.howstuffworks.com/transport/flight/modern/a380.htm

The Airbus A380 is the world's largest passenger jetliner. Learn about the Airbus A380, the technology behind the A380 and see pictures of an A380 under construction.

How the Ancient Land Blob Gondwana Became Today's Continents

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

Gondwana was a humongous landmass that persisted for 300 million years before it began to break up, forming all the continents in the modern Southern Hemisphere.

How the Antikythera Mechanism Worked

science.howstuffworks.com/antikythera-mechanism.htm

Could an ancient, shoebox-size geared device change the way we think about technology's history?

How the Apollo Spacecraft Worked

science.howstuffworks.com/apollo-spacecraft.htm

The Apollo program was initiated with the goal of landing a man on the moon. What was the spacecraft that helped make this giant leap for mankind?

How the Aqualim Shower Head Works

science.howstuffworks.com/environmental/green-tech/sustainable/aqualim-shower-head.htm

The Aqualim shower head is discussed in this section. Learn about the Aqualim shower head.

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