Latest fun facts.

Chopping up onions activates a chemical reaction that releases sulfur gas. Water in the human eye reacts with sulfur gas to create sulfuric acid. Although the amount of acid is very small, it's enough to cause a burning sensation in the eye.

93 percent of all water on board the International Space Station is recycled. NASA has even installed a high tech water filter that turns urine into water. The US astronauts drink it, but the Russian astronauts refuse, although they don't mind handing over their urine to the Americans for filtering.

The International Space Station travels 253 miles (408km) above the earth at 17,100 (27,519km/h) miles per hour and completes a full circle of the earth every 90 minutes. Astronauts on board get to see a sunrise and sunset 16 times each day.

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The American space shuttle is the most complex machine ever built. It is made up of 2.5 million parts and it's engines produced 44 million horsepower on takeoff. The space shuttle program closed on July 21, 2011, after having brought 3 millions pounds of cargo into space.

The Bibhorr formula is a new mathematical formula to calculate the angles of a right angle triangle without using Sine and Cosine functions. Once the length of all sides are known, the numbers are simply plugged into the formula which results in the angle that is opposite to the middle sized side. The formula is: 90*(Longest Side + Medium Side - Shortest Side)^2 / (Medium Side)^2 + 1.5*(Longest Side)*(Longest Side + Medium Side - Shortest Side)

In Australia torn money are valued by the percentage of the banknote remaining. Half of a $20 bill is valued at $10. Banknotes must be greater than 20% of the original size to have any value. If a banknote is 80% or greater in size it is worth the full value.

The world's record for the longest pencil is held by the company BIC, set in October 2017. The pencil measures 3582.6 feet (1091 meters) long. It was made with a graphite core and polystyrene, allowing it to be bendable.

Each main cable in San Francisco's Golden Gate Bridge is made of 27,572 individual thinner wires. It took 80,000 miles (128,748km) of wire to make up each cable, which has a final diameter of 36.3 inches (92.4cm).

In the 1830's ketchup was marketed as a medicine for an upset stomach and rheumatism.