These strange circles started appearing in English wheat fields early in the 1970s. UFO and extraterrestrial theories were suggested. But in 1991, the two pranksters revealed strange appearing of the circles using just rope, planks, and wire.
In the mid 1950s there was a broadcast shown on the BBC about a family harvesting spaghetti from a tree. After that they received hundreds of queries - viewers wanted to know how they could grow their own trees. However, as it turned out it was just an April Fools Day joke.
Around 1970 Manuel Elizalde, Prime Minister of the Philippines stated that he had discovered a stone age tribe named the Tasaday on the island of Mindanao. When scientists tried to look deeply into this, but Manuel Elizalde declared the island to be an off-limits land reserve. 15 years later journalists finally came to the island and found the Tasaday wearing blue jeans and speaking a modern dialect. Inhabitants explained that they had moved into caves under pressure from the minister. However, to that moment Elizalde fled the country with millions of dollars that were accumulated to protect the Tasaday people.
This remarkable horse was capable of solving complex math problems, reading, and even understanding German. Named as Hans he answered questions by tapping hoof. According to the research, however, it was determined that Hans was in fact simply taking cues from the audience. For example, the audience would start to gasp when he reached the correct number of hoof taps.
In 1813 when Charles Redheffer presented a machines that seemed to keep itself turning. Eventually, however, skeptics requested to take a closer look at the machine. As the result they found a cat-gut belt drive leading through the wall and into an attic where it was powered by an old man turning a crank with one hand and eating bread with the other.