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What can your spit tell you about your DNA?
science.howstuffworks.com/life/genetic/spit-dna.htm
Doctors always want your blood, but one day, a health care professional may ask you to open up and say, "Ptooey!" Why? Your spit holds a mother lode of biological information.
What conditions are required for life?
science.howstuffworks.com/environmental/earth/geophysics/conditions-required-life.htm
We argue that living well requires wine and cheese, but what does living at all require? You might be surprised to find out that there's no single definition.
What device did Douglas Engelbart invent?
science.howstuffworks.com/innovation/big-thinkers/douglas-engelbart-invention.htm
If this were trivia night, your team could probably summon this answer without breaking a sweat. But in true polymath style, Engelbart's signature invention is only part of his computer genius. Meet him.
What did the Nazis have to do with archaeology?
science.howstuffworks.com/environmental/earth/archaeology/nazi-archaeology.htm
In "Indiana Jones and the Last Crusade," Dr. Jones battles the Nazis for the Holy Grail. Did the Nazis really have an interest in archaeology? And if so, what fueled it?
What does CERN mean for the future of the universe?
What does CERN mean for the future of the universe? They may make amazing discoveries. Find out: What does CERN mean for the future of the universe?
What does a patent agent do?
science.howstuffworks.com/innovation/new-inventions/patent-agent.htm
The difference between a marketable invention and an unusual paperweight can come down to whether the inventor has received a patent on a prized idea. But getting a patent is a tricky business. It's helpful to have the assistance of someone who knows the ins and outs of the process. Enter the patent agent.
What does an Army combat engineer do?
science.howstuffworks.com/military/army-careers/what-does-army-combat-engineer-do.htm
From constructing bridges to blowing them up, combat engineers must have a head for spatial thinking and a heart that isn't faint. Ready to learn about these military enlistees who are as much action as they are equation?
What does gravity have to do with the big bang?
science.howstuffworks.com/innovation/science-questions/gravity-big-bang.htm
Gravity and it's relationship to the big bang are explained in this article. Learn about the relationship between gravity and the big bang.
What does it mean when a barometer is rising or falling?
science.howstuffworks.com/nature/climate-weather/atmospheric/barometer.htm
A barometer is an instrument that is used to predict the weather. Learn about barometers in this article.
What does tear gas do?
science.howstuffworks.com/question340.htm
It is pretty common to hear someone on the news say, "The crowd was dispersed with tear gas." What is tear gas? What does it do?