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10 Innovations in Water Purification
science.howstuffworks.com/environmental/green-tech/sustainable/10-innovations-water-purification.htm
As far back as 1500 B.C.E., people were trying to purify water to make it drinkable. And we're still at it. Today inventors use tools as simple as clay and as sophisticated as carbon nanotubes to bring clean water to the world.
10 Pieces of Disaster Safety Advice You Should Ignore
There are certain steps you should take to protect yourself, your family and your home during a disaster. These are not those steps.
'Unsolved' Mysteries, Solved: 10 Times We Answered History's Biggest Questions
Was Anna Anderson really Anastasia Romanov? Does the Bermuda Triangle really exist? Wonder no more: We have the answers to these and other formerly unsolved mysteries.
10 Worst Things Ever to Happen at Christmas
The Holidays are supposed to be full of joy, but sometimes it isn't. Check out some of the worst things to ever happen on Christmas at HowStuffWorks.
10 Times It Has Rained Something Other Than Water
Frogs! Fish! Birds! A surprising number of things have rained down from the sky besides water. But how?
How Bonsai Works
home.howstuffworks.com/bonsai.htm
Bonsai is an ancient form of gardening that many consider to be art. Learn more about bonsai and the rich history that comes with it.
How the MQ-9 Reaper Works
science.howstuffworks.com/reaper.htm
Early unmanned aerial vehicles (UAVs) primarily carried out reconnaissance missions in war zones, but the Reaper packs some serious heat. Is there anything more foreboding than a drone with a Hellfire missile?
How Does an Invisibility Cloak Work?
science.howstuffworks.com/invisibility-cloak.htm
With optical-camouflage technology, the invisibility cloak is a reality. Learn what it is.
10 Space Landmarks We'd Like to Visit
science.howstuffworks.com/10-space-landmarks.htm
Fling away your Fodor's! Toss your TripAdvisor! We have the only guided tour of outer space you'll need -- a foray into the final frontier so ambitious it will make the Voyager probes' Grand Tours look like daytrips.
10 Scare-inducing Moments in History
history.howstuffworks.com/historical-events/10-scariest-events-in-history.htm
From serial killers to natural disasters, many events in our history have stoked fear among the masses. Here are 10 fear-stoking moments.