Visionary, polymath, scientist, artist, engineer—Leonardo da Vinci was the quintessential “Renaissance Man.” Whether it was flying machines, diving suits, automatons or advanced weaponry, da Vinci envisioned the future and set about designing it. Here’s a look at Leonardo da Vinci’s most futuristic contraptions.
Nope, it's not the hero with the hammer—but it's just as impressive!
Aerogel, life-support systems, better rockets...and it's all free.
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