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Will we ever unite quantum mechanics with general relativity?
Einstein showed us a mind-blowing way the universe works, while Max Planck and his gang showed us how particles on the atomic and subatomic levels work. But one doesn't explain the other. So there must be a larger theory encompassing them ... or not?
How an Atkinson Cycle Engine Works
auto.howstuffworks.com/atkinson-cycle-engine.htm
An Atkinson cycle engine can complete all four strokes with a single rotation of the crankshaft. Read more about Atkinson cycle engines at HowStuffWorks.
Tooth Extraction
health.howstuffworks.com/wellness/oral-care/procedures/tooth-extraction.htm
Knowing about tooth extraction can make the procedure seem less daunting. Learn about tooth extraction procedures and aftercare.
Rarest Animals in the World: 10 Critically Endangered Species
animals.howstuffworks.com/endangered-species/rarest-animals.htm
The 10 rarest animals in the world are still found in the wild but are dangerously close to becoming extinct.
10 Black Snake Species That Blend With the Shadows
animals.howstuffworks.com/snakes/black-snake.htm
The name "black snake" might sound straightforward, but it actually covers a range of species found across the globe. These snakes come in all shapes and sizes, from small and sleek to long and powerful, and they thrive in habitats as diverse as wetlands and deserts.
10 Things You Need to Know About Wood Pellet Fireplaces
To save money, many people are considering alternative heat sources, and wood pellet fireplaces are one possible solution to rising energy costs. But what do you need to know before you head out to buy one of these energy savers?
How the Porsche 917 Works
auto.howstuffworks.com/porsche-917.htm
The Porsche 917 ranks among the most powerful racecars ever to compete. Read more about the Porsche 917 at HowStuffWorks.
What's more energy efficient for warmer climates: shingles or a metal roof?
home.howstuffworks.com/home-improvement/construction/shingles-or-metal-roof.htm
When it comes to roofing, materials matter -- especially in a hot climate. So when it comes down to asphalt shingles or a metal roof, which really is better?
5 Surprising Benefits of Cruising in a Crossover
auto.howstuffworks.com/car-models/crossover-cars/5-benefits-of-driving-crossover-vehicles.htm
What are the benefits of driving a crossover vehicle? Learn about 5 surprising benefits of cruising in a crossover at HowStuffWorks.
What is theory of mind?
people.howstuffworks.com/theory-of-mind.htm
Theory of mind is the theory for how most humans understand that another person has different desires and feelings. Learn more about theory of mind.