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Could you dig a hole all the way to the Earth's mantle?
science.howstuffworks.com/environmental/earth/geophysics/dig-hole-to-earths-mantle.htm
Have you ever read "Journey to the Center of the Earth" and wondered if it were possible to do it? Well, scientists are in the process of giving it their best shot. How hard is it to dig a hole this deep, and what might they find?
How Olympic Timing Works
entertainment.howstuffworks.com/olympic-timing.htm
In timed Olympic events, the difference between the gold and the silver can come down to a fraction of a second. You won't find that kind of accuracy in your typical wristwatch. Find out about the systems (and backup systems) that keep Olympic timing honest.
How Population Works
people.howstuffworks.com/population.htm
Population is one of the most important aspects of human civilization. Learn about population and find out how a population is counted.
How Thin-film Solar Cells Work
science.howstuffworks.com/environmental/green-science/thin-film-solar-cell.htm
Thin-film solar cells are more flexible and less expensive than traditional solar cells. Learn more about what makes thin-film solar cells different.
Consolidated B-24 Liberator
science.howstuffworks.com/consolidated-b-24-liberator.htm
The Consolidated B-24 Liberator was the most prolific American plane of World War II. But the B-24 was not as attractive as the B-17 bomber, nor did it win the same popular regard from the public. Read the story and specifications of the B-24 bomber.
How Astronauts Work
science.howstuffworks.com/astronaut.htm
Astronauts are adventurers and scientists who work in space. Learn who astronauts are and what they do in space and on Earth.
How the Fermi Paradox Works
science.howstuffworks.com/space/aliens-ufos/fermi-paradox.htm
Are all the aliens hanging out without us?
How a Supernova Works
science.howstuffworks.com/supernova.htm
A dying star can explode with the force of a few octillion nuclear bombs and create any element in the universe. But why do stars go supernova?
What Is the Chemtrails Conspiracy Theory?
science.howstuffworks.com/transport/flight/modern/what-are-chemtrails.htm
It's hard to look up in the sky on a clear day and not see a "cloud" trailing from an airplane. They're called contrails, though some refer to them as "chemtrails" and have odd explanations for their existence.
What to Do With Old Computers: 3 Responsible Options
computer.howstuffworks.com/discarded-old-computer.htm
After years of hard work and loyalty, some computers must finally retire. But since they can't take a pension and move to Florida, where do old computers end up?