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How can water cut through steel?

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Waterjets are explained in this article. Learn about waterjets.

How can we speed up plastic photodegradation?

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Sunlight can break plastic down but not very fast. Is there a way to speed up the process so that natural environments like this one aren't cluttered with plastic debris for centuries?

How can you make water invisible?

science.howstuffworks.com/environmental/earth/oceanography/invisible-water.htm

Magicians say invisible water exists, and they often prove it by floating a small boat on thin air. Learn the magic behind the invisible water trick.

How can you measure the height of a tall tower?

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Is there an easy way to measure the height of a cell phone tower in my neighborhood?

How can you train honeybees to sniff for bombs?

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Those same, buzzing insects that seek out molecular hints of the pollen they use to make honey can just as easily detect traces of materials used to bombs.

How could a hotel orbit the Earth?

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A space hotel is currently under development by a European firm called Galactic Suite Limited. Learn about the development of the world's first space hotel.

How did Lake Nyos suddenly kill 1,700 people?

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One evening, people heard their local lake rumbling. A day and a half later, 1,700 people were dead. What happened on that fateful night?

How did NASA change diapers forever?

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How did NASA change diapers forever? Visit HowStuffWorks to learn how NASA changed diapers forever.

How did Nikola Tesla change the way we use energy?

science.howstuffworks.com/nikola-tesla.htm

Who made it possible to light up your home at night? Thomas Edison, right? Yes, but without the work of Nikola Tesla, we would be living in a different world.

How did a meteor make hundreds of people sick?

science.howstuffworks.com/peru-meteor.htm

A meteor strike in Peru may have made up to 600 people sick, according to recent reports. Find out if the meteor strike in Peru is what made people sick.