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How Do Catapults Work?
science.howstuffworks.com/transport/engines-equipment/question127.htm
How does the ancient catapult work? It doesn't seem like twisted rope and wooden gears or levers would be able to get up the speed to launch heavy loads a great distance.
Do all hybrid cars qualify for tax credits?
auto.howstuffworks.com/do-all-hybrid-cars-qualify-for-tax-credits.htm
Do all hybrid cars qualify for tax credits? Visit HowStuffWorks to learn if all hybrid cars qualify for tax credits.
What are hydrogen fuel cell kits?
auto.howstuffworks.com/fuel-efficiency/fuel-saving-devices/hydrogen-fuel-cell-kits.htm
What are hydrogen fuel cell kits? Keep reading to learn about hydrogen fuel cell kits and what they are used for.
Hot or Not: What Makes Some Places Naturally High in Radioactivity
Surprisingly, living in a city with a high level of natural radiation doesn't have any ill effects.
Quick Tips: Sahaja Yoga Explained
health.howstuffworks.com/wellness/diet-fitness/yoga/quick-tips-sahaja-yoga-explained.htm
More meditation than yoga, Sahaja yoga teaches self awareness through guided meditation.
Chemists Are on the Hunt for a Long-lasting Sunscreen
health.howstuffworks.com/skin-care/beauty/sun-care/longlasting-sunscreen-chemistry.htm
New research examines exactly how sunscreen's chemical filters block radiation from the sun. Learn more in this HowStuffWorks article.
Solar Panels Are Slowly Making Their Way on Cars
auto.howstuffworks.com/fuel-efficiency/vehicles/solar-cars.htm
On a hot day, you could practically singe your fingers on your car's steering wheel. But what if all that heat could be leveraged to power its engine instead?
How accurate are gas mileage monitors?
electronics.howstuffworks.com/gadgets/automotive/gas-mileage-monitor.htm
A gas mileage monitor can help you keep track of your MPG and could change your driving behavior. Learn how a gas mileage monitor can change the way your drive.
The Chariot Tarot Card: Meaning, Symbolism & Interpretation
science.howstuffworks.com/science-vs-myth/extrasensory-perceptions/chariot-card.htm
What does the Chariot card REALLY mean for you? Find out how this powerful symbol can guide you towards success in love, career, and beyond. Get your personalized interpretation now.
What's a beer battery?
science.howstuffworks.com/environmental/energy/beer-battery.htm
A beer battery uses a brewery's waste water to generate electricity. Learn how a beer battery works and about microbial fuel cells.