Perhaps because it was built in secret and designed to be invisible, the stealth bomber is unforgettable the moment you see it. What few remember, though, is that the iconic silhouette almost looked like this. Here's the story of how Senior Peg came to be, why we didn't get it, and why we might want it back.
When it comes to automobiles, the conventional wisdom is you need four wheels or more. So why are there cars driving around with three wheels? We'll take a look at the science (and the economics) of tossing out one of your wheels.
In 1901, Thomas Edison developed the recharcheable nickel-iron battery, a technology he hoped to see implemented in electric cars. But a slow rate of energy output and slower charging time saw it superseded by lead-acid and lithium-ion batteries in standard and electric cars alike.
To most of us, wheels seem pretty intuitive. You've probably known from an early age, for example, that circular or rounded things roll more easily than boxy or angular things. Knowing this, it's hard to imagine that our earliest ancestors did not come to similar realizations on their own — and yet, the first wheels…
If you're one of those people who's always wondering why the flying car hasn't been invented yet, you're too late. The first flying car was already created back in the 1970s — but don't get too excited. It was literally a huge disaster.
Who invented the first car? If we're talking about the first modern automobile, then it's Karl Benz in 1886. But long before him, there were strange forerunners to the today's cars, including toys for emperors, steam-powered artillery carriers, and clanking, creaking British buses.