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What's the difference between gasoline, kerosene, diesel, etc?
auto.howstuffworks.com/fuel-efficiency/alternative-fuels/question105.htm
What's the difference between gasoline, kerosene and diesel? Learn how crude oil's carbon chains determine whether it becomes gasoline, kerosene or diesel.
What Does a Catalytic Converter Do and Why Do People Steal Them?
auto.howstuffworks.com/catalytic-converter.htm
Catalytic converters are one of the most important parts of a car's emissions control system. Learn about catalytic converters and catalytic converter laws.
Entropy: The Invisible Force That Brings Disorder to the Universe
science.howstuffworks.com/entropy.htm
Entropy is the disorder of a system, but that means a lot more than making a mess of a room.
How Light Emitting Diodes (LEDs) Work
electronics.howstuffworks.com/led.htm
Light emitting diodes form numbers on digital clocks, send data from remote controls and illuminate watches - the simple genius of the design makes it infinitely applicable. And now, LEDs are affordable.
Why Is Octopus Blood Blue?
animals.howstuffworks.com/marine-life/why-is-octopus-blood-blue.htm
Octopuses have blue blood, not red blood like most other mammals. Find out why scientists think octopus blood is blue at HowStuffWorks.
How big is the world's smallest electric car?
auto.howstuffworks.com/worlds-smallest-electric-car.htm
Scientists in Switzerland and the Netherlands have created what can be called the world's smallest electric car. So just how small (or big) is it? Find out.
How Does GPS Work?
electronics.howstuffworks.com/gadgets/travel/gps.htm
For less than $100, you can get a pocket-sized gadget that will tell you exactly where you are on Earth at any moment. As long as you have a GPS receiver and a clear view of the sky, you'll never be lost again. Learn more!
How the Deep Underground Neutrino Experiment Will Work
science.howstuffworks.com/deep-underground-neutrino-experiment-will-work.htm
The Deep Underground Neutrino Experiment will shoot a powerful beam of neutrinos through Earth's mantle. Learn more about DUNE at HowStuffWorks.
5th-Grade General Knowledge Quiz
play.howstuffworks.com/quiz/5thgrade-general-knowledge-quiz
Were you a whiz kid at school? How much do you remember from your days in 5th grade? Test your knowledge of 5th grade facts with this simple math, science, English, and history quiz!
Why Is Snow White?
science.howstuffworks.com/nature/climate-weather/atmospheric/question524.htm
Why is snow white? It's frozen water, and water isn't white, it's clear. Learn why snow is white by examining the frequencies of light and how they're absorbed.