Pumice – it has an average porosity of 90%, and initially floats on water.
They were used as a defensive measure against ninjas.
At nine letters long, is the longest word in the English language with only one vowel.
A rabbit – these cute little things have caused immense ecological damage to Australia for the past 150 years.
With a population of around 38 000 people, Monaco is the second smallest country in the world. The home to the Pope, Vatican City, is the smallest country with a population of approximately 1 000 people.
Venus has the longest day of any planet in our solar system. Venus is unusual because it spins the opposite direction of Earth and most other planets and it’s extremely slow. It takes about 243 Earth days to spin around just once. Because it’s so close to the sun, a year goes by fast. Therefore, a day on Venus is nearly 20 Earth days longer than its year.
XIV – Before the adoption of Arabic numerals, the ancient Romans and European civilizations were using the Roman numerals to represent numbers.
False – the Iron Age followed the Bronze Age.