1) A newborn kangaroo is about 1 inch (2.5 centimeters) long and weighs less than a gram.

2) The oldest known musical instrument is a flute made from a bird bone, estimated to be around 43,000 years old.

3) The word "umbrella" contains three vowels: U, E, and A.

4) Mount Everest, located in the Himalayas, is the highest mountain on Earth, reaching a peak elevation of 29,032 feet (8,848 meters).