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Who designed and built the first hybrid car?
auto.howstuffworks.com/fuel-efficiency/hybrid-technology/first-hybrid-car.htm
The first hybrid car was built much earlier than you might expect. Read up on the history of the first hybrid car models in this article.
Leopard 1 Main Battle Tank
science.howstuffworks.com/leopard-1-main-battle-tank.htm
The Leopard 1 Main Battle Tank was post-war Germany's first tank designed and built in West Germany. Learn more about the Leopard 1 Main Battle Tank.
1962, 1963, 1964 Plymouth Sport Fury
auto.howstuffworks.com/1962-1964-plymouth-sport-fury.htm
1962-1964 Plymouth Sport Fury was not the best built or styled, but they have held up well over the years. Learn about 1962-1964 Plymouth Sport Fury.
How the Tweel Airless Tire Works
auto.howstuffworks.com/tweel-airless-tire.htm
The Tweel Airless Tire is Michelin's alternative to the pneumatic tire. Learn how the Tweel Airless Tire works and about Tweel advantages and problems.
How is carbon dioxide eliminated aboard a spacecraft?
science.howstuffworks.com/carbon-dioxide-eliminated-aboard-spacecraft.htm
To get carbon dioxide eliminated aboard a spacecraft you need a system similar to SCUBA. Learn about carbon dioxide elimination.
Are Pentagon-confirmed UFOs a National Security Threat?
science.howstuffworks.com/space/aliens-ufos/ufos-news.htm
Recently, there's been a spike in UFO sightings - officially UAP, or Unidentified Aerial Phenomena - all over the world and nobody seems to know why or what the objects we're seeing might be.
How to Recycle Tires
auto.howstuffworks.com/recycle-tires.htm
Recycling tires can help protect the environment. Read this article and learn how to recycle tires.
Can a TV Actor Live Off Royalties Forever?
entertainment.howstuffworks.com/can-tv-actor-live-off-royalties-forever.htm
Can one big hit TV show provide you income for life? Find out if a TV actor can live off royalties forever.
Think You Don't Get Enough Protein? That May Just Be Hype
recipes.howstuffworks.com/protein-superfood-industry-news.htm
Global retail sales of protein supplement products reached a staggering $18.9 billion in 2020, but is all this extra protein in our diets really necessary?
Flying High: The Aircraft Quiz
play.howstuffworks.com/quiz/aircraft-quiz
Manned flight has altered the course of humanity. How much do you know about the aircraft of the world? Take this quiz to find out.