Wall Defense Leonardo designed complex and ingenious methods of defence. Here, when the walls are under attack, the soldiers hidden behind the battlements could quickly and easily ward-off enemies and their single movement by using a system of levers. As the enemy used ladders in an attempt to ..
Machine GunThe multi-barrelled machine gun was a weapon with remarkable firepower. Da Vinci sketched this rolling artillery battery around 1480 while in Florence, perhaps as a calling card to a warrior prince in need of a military architect. A hand crank adjusts elevation, and reloading is a ..
Vietnamese Mossy FrogTheloderma corticale, or the Vietnamese mossy frog, is a species of frog in the Rhacophoridae family. It is found in Vietnam and possibly China. Its natural habitats are subtropical or tropical moist lowland forests, intermittent freshwater marches, and rocky areas. The ..
Malagasy Rainbow Frog The Malagasy rainbow frog lives in the rocky dry forests of Madagascar's Isalo Massif, where it breeds in shallow temporary pools found in canyons. This species is well adapted to climbing in its rocky surroundings, and can even scale vertical surfaces! When threatened, ..
Jackson's Patented Anti-Gravity Boot Michael Jackson invented and patented special boots that allowed the wearer to lean so far forward that it seems to defy gravity. He used this for the famous "lean" in the "Smooth Criminal" music video. Michael Jackson's Oxygen Bed For ..