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11 of the World's Worst Serial Killers
people.howstuffworks.com/10-worlds-most-prolific-serial-killers.htm
Some serial killers have murdered more than 100 people. Who are the worst serial killers, and why did they do it?
How John McCain Worked
history.howstuffworks.com/historical-figures/john-mccain.htm
John McCain is a Republican senator and candidate for the presidency in the 2008 election. Learn about John McCain and the political career of John McCain.
How Radio Controlled Toys Work
science.howstuffworks.com/rc-toy.htm
RC toys come in many varieties from cars to robots. Learn about the parts of a radio controlled toy and see how RC toys operate without the aid of wires.
How Cruise Control Systems Work
auto.howstuffworks.com/cruise-control.htm
Cruise control is already an amazing system, and it's evolving into something a lot more powerful. Learn how cruise control works and check out some of the adaptive systems in development.
What is the difference between a hardwood and a softwood?
science.howstuffworks.com/life/genetic/question598.htm
What is the difference between a hardwood and a softwood? How hard does a tree have to be to be considered hardwood?
How can two seemingly unrelated species that live in isolation from each other evolve into identical forms?
science.howstuffworks.com/life/evolution/parallel-evolution.htm
Parallel evolution leads two seemingly unrelated species living in isolation from each other to evolve into identical forms. How? Learn about parallel evolution.
How Instant Messaging Security Works
computer.howstuffworks.com/e-mail-messaging/instant-messaging-security.htm
Are you interested in learning how instant messaging security works? Check out HowStuffWorks for information on how instant messaging security works.
What's the Difference Between a Fuel Cell Vehicle and a Hydrogen-on-Demand Vehicle?
auto.howstuffworks.com/fuel-efficiency/alternative-fuels/fuel-cell-difference.htm
A major hurdle to hydrogen-as-car-fuel is the public perception that hydrogen cars are unsafe. Read this article to find out if hydrogen cars are safe.
How much power does the world consume?
science.howstuffworks.com/environmental/green-science/world-power-consumption.htm
World power consumption is dominated by the world's richest countries. Learn about world power consumption and find out how much power the world consumes.
Can You Really Use Vegetable Oil to Fuel Your Car?
auto.howstuffworks.com/fuel-efficiency/fuel-consumption/vegetable-oil-fuel.htm
Could vegetable oil really become commonplace as a fuel? While it certainly is an option for some engines, vegetable oil is a long way from being the fuel alternative of the future.